n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 5 |
4 | 12 |
5 | 51 |
6 | 160 |
7 | 585 |
8 | 2016 |
9 | 7280 |
10 | 26112 |
11 | 95325 |
12 | 349180 |
13 | 1290555 |
14 | 4792320 |
15 | 17895679 |
16 | 67104768 |
17 | 252645135 |
18 | 954422560 |
19 | 3616814565 |
20 | 13743842916 |
21 | 52357696365 |
22 | 199911014400 |
23 | 764877654105 |
24 | 2932030307680 |
25 | 11258999068416 |
[1,0,5,12,51,160,585,2016,7280,26112,95325,349180, 1290555,4792320,17895679,67104768,252645135, 954422560,3616814565,13743842916,52357696365, 199911014400,764877654105,2932030307680, 11258999068416] |