n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 5 |
5 | 26 |
6 | 91 |
7 | 246 |
8 | 2801 |
9 | 26650 |
10 | 159601 |
11 | 702406 |
12 | 12479941 |
13 | 172561676 |
14 | 1462655195 |
15 | 8918930476 |
16 | 215370384321 |
17 | 3906667179836 |
18 | 42828875064001 |
19 | 333816101642140 |
20 | 10190496077676901 |
21 | 228789539391769336 |
22 | 3077152545301687931 |
23 | 29203537040556576776 |
[1,1,1,1,5,26,91,246,2801,26650,159601,702406, 12479941,172561676,1462655195,8918930476, 215370384321,3906667179836,42828875064001, 333816101642140,10190496077676901, 228789539391769336,3077152545301687931, 29203537040556576776] |