n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 14 |
6 | 90 |
7 | 646 |
8 | 5242 |
9 | 47622 |
10 | 479306 |
11 | 5296790 |
12 | 63779034 |
13 | 831283558 |
14 | 11661506218 |
15 | 175203184374 |
16 | 2806878055610 |
17 | 47767457130566 |
18 | 860568917787402 |
19 | 16362838542699862 |
20 | 327460573946510746 |
21 | 6880329406055690790 |
22 | 151436547414562736234 |
23 | 3484423186862152966838 |
[1,1,0,0,2,14,90,646,5242,47622,479306,5296790, 63779034,831283558,11661506218,175203184374, 2806878055610,47767457130566,860568917787402, 16362838542699862,327460573946510746, 6880329406055690790,151436547414562736234, 3484423186862152966838] |