n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 4 |
4 | 55 |
5 | 154 |
6 | 1885 |
7 | 5248 |
8 | 64051 |
9 | 178294 |
10 | 2175865 |
11 | 6056764 |
12 | 73915375 |
13 | 205751698 |
14 | 2510946901 |
15 | 6989500984 |
16 | 85298279275 |
17 | 237437281774 |
18 | 2897630548465 |
19 | 8065878079348 |
20 | 98434140368551 |
21 | 274002417416074 |
22 | 3343863141982285 |
23 | 9308016314067184 |
24 | 113592912687029155 |
[0,1,4,55,154,1885,5248,64051,178294,2175865, 6056764,73915375,205751698,2510946901,6989500984, 85298279275,237437281774,2897630548465, 8065878079348,98434140368551,274002417416074, 3343863141982285,9308016314067184, 113592912687029155] |