n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 12 |
5 | 68 |
6 | 473 |
7 | 3998 |
8 | 39327 |
9 | 443599 |
10 | 5629807 |
11 | 79486044 |
12 | 1235018598 |
13 | 20946691457 |
14 | 385025599130 |
15 | 7624623236381 |
16 | 161823815625933 |
17 | 3664505951884255 |
18 | 88189911547566082 |
19 | 2247691180645108608 |
20 | 60480432646998315279 |
21 | 1713328345952593367876 |
22 | 50970518521542636421145 |
[1,1,1,3,12,68,473,3998,39327,443599,5629807, 79486044,1235018598,20946691457,385025599130, 7624623236381,161823815625933,3664505951884255, 88189911547566082,2247691180645108608, 60480432646998315279,1713328345952593367876, 50970518521542636421145] |