n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1974 |
6 | 42368 |
7 | 397014 |
8 | 2326320 |
9 | 10087628 |
10 | 35464464 |
11 | 106783320 |
12 | 285336128 |
13 | 693331146 |
14 | 1558986816 |
15 | 3286192514 |
16 | 6558317232 |
17 | 12488282352 |
18 | 22829958032 |
19 | 40269324564 |
20 | 68817690624 |
21 | 114333609854 |
22 | 185205015936 |
[0,0,0,0,0,1974,42368,397014,2326320,10087628, 35464464,106783320,285336128,693331146,1558986816, 3286192514,6558317232,12488282352,22829958032, 40269324564,68817690624,114333609854,185205015936] |