The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 4 |
| 4 | 15 |
| 5 | 36 |
| 6 | 103 |
| 7 | 832 |
| 8 | 187 |
| 9 | 2500 |
| 10 | 981 |
| 11 | 5904 |
| 12 | 133 |
| 13 | 11944 |
| 14 | 1018 |
| 15 | 21716 |
| 16 | 3551 |
| 17 | 36568 |
| 18 | 3859 |
| 19 | 57936 |
| 20 | 559 |
| 21 | 87464 |
| 22 | 6619 |
| 23 | 127156 |
| 24 | 37835 |
| 25 | 178916 |
| 26 | 52517 |
| 27 | 245116 |
| 28 | 71083 |
| 29 | 328180 |
| 30 | 94187 |
| 31 | 430688 |
| 32 | 122529 |
| 33 | 555508 |
| 34 | 156813 |
| 35 | 705696 |
| 36 | 98899 |
| 37 | 884432 |
| 38 | 123199 |
[0,0,4,15,36,103,832,187,2500,981,5904,133,11944, 1018,21716,3551,36568,3859,57936,559,87464,6619, 127156,37835,178916,52517,245116,71083,328180, 94187,430688,122529,555508,156813,705696,98899, 884432,123199] |