n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 12 |
4 | 116 |
5 | 1555 |
6 | 26682 |
7 | 558215 |
8 | 13781448 |
9 | 392209380 |
10 | 12641850510 |
11 | 455198725025 |
12 | 18109373455164 |
13 | 788854833679549 |
14 | 37343190699472322 |
15 | 1908871649888004240 |
16 | 104789417805394595600 |
17 | 6148562290130009617619 |
[0,1,2,12,116,1555,26682,558215,13781448, 392209380,12641850510,455198725025,18109373455164, 788854833679549,37343190699472322, 1908871649888004240,104789417805394595600, 6148562290130009617619] |