n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 31 |
4 | 364 |
5 | 5746 |
6 | 113944 |
7 | 2719291 |
8 | 75843724 |
9 | 2420160286 |
10 | 86941080904 |
11 | 3471911602006 |
12 | 152562875644984 |
13 | 7315129181611876 |
14 | 380045172886143664 |
15 | 21266347877729314771 |
16 | 1275148311699896290444 |
17 | 81563275661324271278566 |
[1,1,4,31,364,5746,113944,2719291,75843724, 2420160286,86941080904,3471911602006, 152562875644984,7315129181611876, 380045172886143664,21266347877729314771, 1275148311699896290444,81563275661324271278566] |