n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 80 |
4 | 1224 |
5 | 9152 |
6 | 45276 |
7 | 170784 |
8 | 534464 |
9 | 1438848 |
10 | 3507102 |
11 | 7711600 |
12 | 16053728 |
13 | 30831552 |
14 | 57578072 |
15 | 100382304 |
16 | 173117952 |
17 | 280579200 |
18 | 455656725 |
19 | 697508496 |
20 | 1079398256 |
21 | 1580599552 |
22 | 2351610612 |
23 | 3315523424 |
24 | 4785293568 |
25 | 6534524160 |
26 | 9173253878 |
27 | 12226860576 |
[0,0,1,80,1224,9152,45276,170784,534464,1438848, 3507102,7711600,16053728,30831552,57578072, 100382304,173117952,280579200,455656725,697508496, 1079398256,1580599552,2351610612,3315523424, 4785293568,6534524160,9173253878,12226860576] |