n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 10 |
6 | 30 |
7 | 86 |
8 | 180 |
9 | 344 |
10 | 624 |
11 | 1056 |
12 | 1626 |
13 | 2522 |
14 | 3646 |
15 | 5118 |
16 | 7164 |
17 | 9784 |
18 | 12868 |
19 | 16848 |
20 | 21438 |
21 | 27202 |
22 | 34298 |
23 | 42550 |
24 | 51800 |
25 | 63184 |
26 | 76256 |
27 | 91032 |
28 | 108086 |
29 | 127850 |
30 | 149442 |
31 | 174902 |
32 | 202552 |
33 | 233608 |
34 | 268512 |
35 | 306664 |
36 | 349394 |
37 | 398226 |
38 | 450510 |
39 | 507038 |
40 | 569204 |
[0,0,0,2,10,30,86,180,344,624,1056,1626,2522,3646, 5118,7164,9784,12868,16848,21438,27202,34298, 42550,51800,63184,76256,91032,108086,127850, 149442,174902,202552,233608,268512,306664,349394, 398226,450510,507038,569204] |