n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 48 |
5 | 600 |
6 | 3108 |
7 | 10388 |
8 | 27328 |
9 | 61668 |
10 | 124900 |
11 | 233288 |
12 | 409008 |
13 | 681408 |
14 | 1088388 |
15 | 1677900 |
16 | 2509568 |
17 | 3656428 |
18 | 5206788 |
19 | 7266208 |
20 | 9959600 |
21 | 13433448 |
22 | 17858148 |
23 | 23430468 |
24 | 30376128 |
25 | 38952500 |
26 | 49451428 |
27 | 62202168 |
28 | 77574448 |
29 | 95981648 |
30 | 117884100 |
[0,0,0,48,600,3108,10388,27328,61668,124900, 233288,409008,681408,1088388,1677900,2509568, 3656428,5206788,7266208,9959600,13433448,17858148, 23430468,30376128,38952500,49451428,62202168, 77574448,95981648,117884100] |