# A158784 (b-file synthesized from sequence entry)
0 1
1 4
2 16
3 72
4 288
5 1168
6 5184
7 20768
8 85120
9 373312
10 1499392
11 6194304
12 26890752
13 108349696
14 450216960
15 1937707520
16 7834814464
17 32689300480
18 139682910208
19 566806726656
20 2371481051136
21 10073319706624
22 41018592608256