The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 16 |
| 10 | 170 |
| 11 | 920 |
| 12 | 3512 |
| 13 | 10896 |
| 14 | 29020 |
| 15 | 68550 |
| 16 | 147240 |
| 17 | 292996 |
| 18 | 547590 |
| 19 | 970996 |
| 20 | 1646446 |
| 21 | 2686212 |
| 22 | 4238086 |
| 23 | 6492580 |
| 24 | 9690846 |
| 25 | 14133316 |
| 26 | 20189062 |
| 27 | 28305876 |
| 28 | 39021070 |
| 29 | 52972996 |
| 30 | 70913286 |
| 31 | 93719812 |
| 32 | 122410366 |
| 33 | 158157060 |
| 34 | 202301446 |
| 35 | 256370356 |
| 36 | 322092462 |
[0,0,0,0,0,0,0,0,16,170,920,3512,10896,29020, 68550,147240,292996,547590,970996,1646446,2686212, 4238086,6492580,9690846,14133316,20189062, 28305876,39021070,52972996,70913286,93719812, 122410366,158157060,202301446,256370356,322092462] |