n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 15 |
4 | 226 |
5 | 2630 |
6 | 95420 |
7 | 4177117 |
8 | 371458250 |
9 | 49558386762 |
10 | 11496848193144 |
11 | 4055873729544890 |
12 | 2321900139799896688 |
13 | 2052844416093203835934 |
14 | 2864423943667784141723196 |
15 | 6181759121650271558049171285 |
16 | 20773297302068160010868731066114 |
[1,1,4,15,226,2630,95420,4177117,371458250, 49558386762,11496848193144,4055873729544890, 2321900139799896688,2052844416093203835934, 2864423943667784141723196, 6181759121650271558049171285, 20773297302068160010868731066114] |