n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 15 |
4 | 75 |
5 | 222 |
6 | 510 |
7 | 1005 |
8 | 1785 |
9 | 2940 |
10 | 4572 |
11 | 6795 |
12 | 9735 |
13 | 13530 |
14 | 18330 |
15 | 24297 |
16 | 31605 |
17 | 40440 |
18 | 51000 |
19 | 63495 |
20 | 78147 |
21 | 95190 |
22 | 114870 |
23 | 137445 |
24 | 163185 |
25 | 192372 |
26 | 225300 |
27 | 262275 |
28 | 303615 |
29 | 349650 |
30 | 400722 |
31 | 457185 |
32 | 519405 |
33 | 587760 |
34 | 662640 |
35 | 744447 |
36 | 833595 |
37 | 930510 |
[0,0,15,75,222,510,1005,1785,2940,4572,6795,9735, 13530,18330,24297,31605,40440,51000,63495,78147, 95190,114870,137445,163185,192372,225300,262275, 303615,349650,400722,457185,519405,587760,662640, 744447,833595,930510] |