n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 12 |
5 | 64 |
6 | 402 |
7 | 2999 |
8 | 25100 |
9 | 236278 |
10 | 2444779 |
11 | 27725926 |
12 | 340761474 |
13 | 4522224643 |
14 | 64378645709 |
15 | 979609661544 |
16 | 15862570817855 |
17 | 272466359964053 |
18 | 4948142926019039 |
19 | 94748748685737418 |
20 | 1907956061833749740 |
21 | 40310880538563569017 |
22 | 891655630401500129652 |
23 | 20608302703021633063682 |
[0,1,1,3,12,64,402,2999,25100,236278,2444779, 27725926,340761474,4522224643,64378645709, 979609661544,15862570817855,272466359964053, 4948142926019039,94748748685737418, 1907956061833749740,40310880538563569017, 891655630401500129652,20608302703021633063682] |