n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 1 |
7 | 48 |
8 | 735 |
9 | 6272 |
10 | 37044 |
11 | 169344 |
12 | 640332 |
13 | 2090880 |
14 | 6073353 |
15 | 16032016 |
16 | 39078039 |
17 | 89037312 |
18 | 191456720 |
19 | 391523328 |
20 | 766192176 |
21 | 1442244096 |
22 | 2622518073 |
23 | 4623197040 |
24 | 7925786407 |
25 | 13248326784 |
26 | 21641442900 |
27 | 34616067200 |
28 | 54311107500 |
29 | 83710972800 |
[0,0,0,0,0,1,48,735,6272,37044,169344,640332, 2090880,6073353,16032016,39078039,89037312, 191456720,391523328,766192176,1442244096, 2622518073,4623197040,7925786407,13248326784, 21641442900,34616067200,54311107500,83710972800] |