n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 44 |
3 | 344 |
4 | 2736 |
5 | 21856 |
6 | 174784 |
7 | 1398144 |
8 | 11184896 |
9 | 89478656 |
10 | 715828224 |
11 | 5726623744 |
12 | 45812985856 |
13 | 366503878656 |
14 | 2932031012864 |
15 | 23456248070144 |
16 | 187649984495616 |
17 | 1501199875833856 |
18 | 12009599006408704 |
19 | 96076792050745344 |
20 | 768614336404914176 |
[1,6,44,344,2736,21856,174784,1398144,11184896, 89478656,715828224,5726623744,45812985856, 366503878656,2932031012864,23456248070144, 187649984495616,1501199875833856, 12009599006408704,96076792050745344, 768614336404914176] |