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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 16 |
| 3 | 75 |
| 4 | 236 |
| 5 | 567 |
| 6 | 1172 |
| 7 | 2157 |
| 8 | 3672 |
| 9 | 5861 |
| 10 | 8920 |
| 11 | 13031 |
| 12 | 18436 |
| 13 | 25355 |
| 14 | 34076 |
| 15 | 44857 |
| 16 | 58032 |
| 17 | 73897 |
| 18 | 92832 |
| 19 | 115171 |
| 20 | 141340 |
| 21 | 171711 |
| 22 | 206756 |
| 23 | 246885 |
| 24 | 292616 |
| 25 | 344397 |
| 26 | 402792 |
| 27 | 468287 |
| 28 | 541492 |
| 29 | 622931 |
| 30 | 713260 |
| 31 | 813041 |
| 32 | 922976 |
| 33 | 1043665 |
[0,1,16,75,236,567,1172,2157,3672,5861,8920,13031, 18436,25355,34076,44857,58032,73897,92832,115171, 141340,171711,206756,246885,292616,344397,402792, 468287,541492,622931,713260,813041,922976,1043665] |