n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 40 |
4 | 360 |
5 | 3570 |
6 | 37476 |
7 | 410490 |
8 | 4635330 |
9 | 53589045 |
10 | 631115140 |
11 | 7544876956 |
12 | 91321148575 |
13 | 1116879203135 |
14 | 13781214640630 |
15 | 171350293212360 |
16 | 2144719821588471 |
17 | 27001925967762160 |
18 | 341717698703959875 |
[0,1,5,40,360,3570,37476,410490,4635330,53589045, 631115140,7544876956,91321148575,1116879203135, 13781214640630,171350293212360,2144719821588471, 27001925967762160,341717698703959875] |