n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 762 |
5 | 12699 |
6 | 90270 |
7 | 417435 |
8 | 1478160 |
9 | 4354497 |
10 | 11203269 |
11 | 25970895 |
12 | 55414395 |
13 | 110505120 |
14 | 208300257 |
15 | 374375664 |
16 | 645922095 |
17 | 1075615380 |
18 | 1736379630 |
19 | 2727171042 |
20 | 4179918384 |
21 | 6267764745 |
22 | 9214763640 |
23 | 13307191065 |
24 | 18906643602 |
25 | 26465101179 |
26 | 36542141595 |
27 | 49824502425 |
[0,0,0,762,12699,90270,417435,1478160,4354497, 11203269,25970895,55414395,110505120,208300257, 374375664,645922095,1075615380,1736379630, 2727171042,4179918384,6267764745,9214763640, 13307191065,18906643602,26465101179,36542141595, 49824502425] |