n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 14 |
3 | 132 |
4 | 1446 |
5 | 17340 |
6 | 220524 |
7 | 2919240 |
8 | 39761094 |
9 | 553080044 |
10 | 7818246436 |
11 | 111929301688 |
12 | 1618972088028 |
13 | 23616939932376 |
14 | 346986771074328 |
15 | 5129262870441360 |
16 | 76223971339368006 |
17 | 1137977844577647948 |
18 | 17058656523389665268 |
19 | 256642078290095158360 |
20 | 3873624648355421605492 |
[1,2,14,132,1446,17340,220524,2919240,39761094, 553080044,7818246436,111929301688,1618972088028, 23616939932376,346986771074328,5129262870441360, 76223971339368006,1137977844577647948, 17058656523389665268,256642078290095158360, 3873624648355421605492] |