# Computed using the Mathematica program that I contributed to this sequence
0 0
1 4
2 8
3 12
4 56
5 910
6 1354
7 5798
8 9111312
9 13555756
10 5799911910
11 911131313551354
12 1355575757995798
13 579991191191113139111312
14 9111313135513551355575713555756
15 135557575799579957999119115799911910
16 579991191191113139111313911131313551355911131313551354
17 911131313551355135557571355575713555757579957991355575757995798
18 135557575799579957999119115799911911579991191191113139111313579991191191113139111312
19 57999119119111313911131391113131355135591113131355135591113131355135513555757135557579111313135513551355575713555756
20 911131313551355135557571355575713555757579957991355575757995799135557575799579957999119115799911911135557575799579957999119115799911910
21 135557575799579957999119115799911911579991191191113139111313579991191191113139111313579991191191113139111313911131313551355911131313551355579991191191113139111313911131313551355911131313551354
22 57999119119111313911131391113131355135591113131355135591113131355135513555757135557579111313135513551355575713555757911131313551355135557571355575713555757579957991355575757995799911131313551355135557571355575713555757579957991355575757995798
23 911131313551355135557571355575713555757579957991355575757995799135557575799579957999119115799911911135557575799579957999119115799911911135557575799579957999119115799911911579991191191113139111313579991191191113139111313135557575799579957999119115799911911579991191191113139111313579991191191113139111312
24 1355575757995799579991191157999119115799911911911131391113135799911911911131391113135799911911911131391113139111313135513559111313135513555799911911911131391113139111313135513559111313135513555799911911911131391113139111313135513559111313135513559111313135513551355575713555757911131313551355135557571355575757999119119111313911131391113131355135591113131355135591113131355135513555757135557579111313135513551355575713555756
25 57999119119111313911131391113131355135591113131355135591113131355135513555757135557579111313135513551355575713555757911131313551355135557571355575713555757579957991355575757995799911131313551355135557571355575713555757579957991355575757995799911131313551355135557571355575713555757579957991355575757995799135557575799579957999119115799911911135557575799579957999119115799911911911131313551355135557571355575713555757579957991355575757995799135557575799579957999119115799911911135557575799579957999119115799911910
26 911131313551355135557571355575713555757579957991355575757995799135557575799579957999119115799911911135557575799579957999119115799911911135557575799579957999119115799911911579991191191113139111313579991191191113139111313135557575799579957999119115799911911579991191191113139111313579991191191113139111313135557575799579957999119115799911911579991191191113139111313579991191191113139111313579991191191113139111313911131313551355911131313551355579991191191113139111313911131313551355911131313551355135557575799579957999119115799911911579991191191113139111313579991191191113139111313579991191191113139111313911131313551355911131313551355579991191191113139111313911131313551355911131313551354
27 13555757579957995799911911579991191157999119119111313911131357999119119111313911131357999119119111313911131391113131355135591113131355135557999119119111313911131391113131355135591113131355135557999119119111313911131391113131355135591113131355135591113131355135513555757135557579111313135513551355575713555757579991191191113139111313911131313551355911131313551355911131313551355135557571355575791113131355135513555757135557575799911911911131391113139111313135513559111313135513559111313135513551355575713555757911131313551355135557571355575791113131355135513555757135557571355575757995799135557575799579991113131355135513555757135557571355575757995799135557575799579957999119119111313911131391113131355135591113131355135591113131355135513555757135557579111313135513551355575713555757911131313551355135557571355575713555757579957991355575757995799911131313551355135557571355575713555757579957991355575757995798