n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 4 |
6 | 155 |
7 | 2326 |
8 | 29327 |
9 | 334720 |
10 | 3580023 |
11 | 36721672 |
12 | 366906343 |
13 | 3604148124 |
14 | 34997285167 |
15 | 337195587089 |
16 | 3231721755068 |
17 | 30863065190469 |
18 | 294053775100845 |
[0,0,0,0,4,155,2326,29327,334720,3580023,36721672, 366906343,3604148124,34997285167,337195587089, 3231721755068,30863065190469,294053775100845] |