n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 7 |
5 | 27 |
6 | 106 |
7 | 443 |
8 | 2045 |
9 | 10440 |
10 | 57781 |
11 | 340375 |
12 | 2115664 |
13 | 13847485 |
14 | 95394573 |
15 | 690495874 |
16 | 5235101739 |
17 | 41428115543 |
18 | 341177640610 |
19 | 2917641580783 |
20 | 25866987547865 |
21 | 237421321934176 |
22 | 2252995117706961 |
23 | 22073206655954547 |
24 | 222971522853648704 |
25 | 2319379362420267753 |
[0,1,1,2,7,27,106,443,2045,10440,57781,340375, 2115664,13847485,95394573,690495874,5235101739, 41428115543,341177640610,2917641580783, 25866987547865,237421321934176,2252995117706961, 22073206655954547,222971522853648704, 2319379362420267753] |