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A247331 as a simple table

n a(n)
0 1
1 4
2 20
3 148
4 1492
5 18068
6 244628
7 3582612
8 55783252
9 913716116
10 15633525524
11 278068128660
12 5124595687636
13 97633146977428
14 1919960496128660
15 38930551809036436
16 813367272118600276
17 17501331733030883732
18 387693438148021391892
19 8839040069648710445460

[1,4,20,148,1492,18068,244628,3582612,55783252,
 913716116,15633525524,278068128660,5124595687636,
 97633146977428,1919960496128660,38930551809036436,
 813367272118600276,17501331733030883732,
 387693438148021391892,8839040069648710445460]

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Last modified July 20 05:30 EDT 2024. Contains 374441 sequences. (Running on oeis4.)