n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 3 |
4 | 4 |
5 | 5 |
6 | 27 |
7 | 63 |
8 | 116 |
9 | 354 |
10 | 945 |
11 | 2123 |
12 | 5563 |
13 | 14846 |
14 | 36519 |
15 | 93083 |
16 | 244068 |
17 | 622013 |
18 | 1590318 |
19 | 4131265 |
20 | 10658969 |
21 | 27440808 |
22 | 71127683 |
23 | 184324461 |
24 | 476969939 |
25 | 1237420755 |
26 | 3213687698 |
27 | 8343223779 |
28 | 21682184311 |
29 | 56400917786 |
30 | 146742491187 |
31 | 381991981659 |
[1,0,0,3,4,5,27,63,116,354,945,2123,5563,14846, 36519,93083,244068,622013,1590318,4131265, 10658969,27440808,71127683,184324461,476969939, 1237420755,3213687698,8343223779,21682184311, 56400917786,146742491187,381991981659] |