n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 5 |
5 | 19 |
6 | 64 |
7 | 201 |
8 | 603 |
9 | 1752 |
10 | 4973 |
11 | 13871 |
12 | 38176 |
13 | 103985 |
14 | 280947 |
15 | 754216 |
16 | 2014469 |
17 | 5358823 |
18 | 14209456 |
19 | 37580841 |
20 | 99188427 |
21 | 261360696 |
22 | 687777245 |
23 | 1808000351 |
24 | 4748806720 |
25 | 12464634209 |
26 | 32699621859 |
27 | 85747477576 |
28 | 224777691893 |
29 | 589072137367 |
30 | 1543445353168 |
[0,0,0,1,5,19,64,201,603,1752,4973,13871,38176, 103985,280947,754216,2014469,5358823,14209456, 37580841,99188427,261360696,687777245,1808000351, 4748806720,12464634209,32699621859,85747477576, 224777691893,589072137367,1543445353168] |