n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 2 |
4 | 19 |
5 | 90 |
6 | 302 |
7 | 820 |
8 | 1926 |
9 | 4068 |
10 | 7920 |
11 | 14454 |
12 | 25025 |
13 | 41470 |
14 | 66222 |
15 | 102440 |
16 | 154156 |
17 | 226440 |
18 | 325584 |
19 | 459306 |
20 | 636975 |
21 | 869858 |
22 | 1171390 |
23 | 1557468 |
24 | 2046770 |
25 | 2661100 |
26 | 3425760 |
27 | 4369950 |
28 | 5527197 |
29 | 6935814 |
30 | 8639390 |
31 | 10687312 |
32 | 13135320 |
33 | 16046096 |
34 | 19489888 |
[0,0,0,2,19,90,302,820,1926,4068,7920,14454,25025, 41470,66222,102440,154156,226440,325584,459306, 636975,869858,1171390,1557468,2046770,2661100, 3425760,4369950,5527197,6935814,8639390,10687312, 13135320,16046096,19489888] |