n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 4 |
4 | 18 |
5 | 106 |
6 | 658 |
7 | 4778 |
8 | 38770 |
9 | 352458 |
10 | 3546170 |
11 | 39179282 |
12 | 471653322 |
13 | 6146403266 |
14 | 86212578962 |
15 | 1295136607114 |
16 | 20747437026442 |
17 | 353059209467042 |
18 | 6360348815730370 |
19 | 120931046165866362 |
20 | 2420054522391186274 |
21 | 50846927248165344442 |
22 | 1119121906010637564906 |
23 | 25749587951077654272898 |
[1,1,0,4,18,106,658,4778,38770,352458,3546170, 39179282,471653322,6146403266,86212578962, 1295136607114,20747437026442,353059209467042, 6360348815730370,120931046165866362, 2420054522391186274,50846927248165344442, 1119121906010637564906,25749587951077654272898] |