n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 12 |
3 | 62 |
4 | 327 |
5 | 1851 |
6 | 10802 |
7 | 64440 |
8 | 391218 |
9 | 2408001 |
10 | 14989608 |
11 | 94197594 |
12 | 596756374 |
13 | 3807010920 |
14 | 24435261432 |
15 | 157681777148 |
16 | 1022391454116 |
17 | 6657413851086 |
18 | 43517229086467 |
19 | 285447137446989 |
20 | 1878287880309900 |
21 | 12395149957521672 |
22 | 82014499806039711 |
[1,3,12,62,327,1851,10802,64440,391218,2408001, 14989608,94197594,596756374,3807010920, 24435261432,157681777148,1022391454116, 6657413851086,43517229086467,285447137446989, 1878287880309900,12395149957521672, 82014499806039711] |