n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 26 |
3 | 232 |
4 | 2620 |
5 | 35696 |
6 | 568504 |
7 | 10349536 |
8 | 211799312 |
9 | 4809701440 |
10 | 119952692896 |
11 | 3257843882624 |
12 | 95680443760576 |
13 | 3020676745975552 |
14 | 101990226254706560 |
15 | 3666624057550245376 |
16 | 139813029266338603264 |
[1,4,26,232,2620,35696,568504,10349536,211799312, 4809701440,119952692896,3257843882624, 95680443760576,3020676745975552, 101990226254706560,3666624057550245376, 139813029266338603264] |