| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 11 |
| 3 | 58 |
| 4 | 177 |
| 5 | 437 |
| 6 | 894 |
| 7 | 1659 |
| 8 | 2813 |
| 9 | 4502 |
| 10 | 6836 |
| 11 | 10008 |
| 12 | 14121 |
| 13 | 19449 |
| 14 | 26117 |
| 15 | 34372 |
| 16 | 44422 |
| 17 | 56597 |
| 18 | 71044 |
| 19 | 88160 |
| 20 | 108115 |
| 21 | 131328 |
| 22 | 158074 |
| 23 | 188773 |
| 24 | 223604 |
| 25 | 263172 |
| 26 | 307719 |
| 27 | 357715 |
| 28 | 413493 |
| 29 | 475690 |
| 30 | 544480 |
| 31 | 620632 |
| 32 | 704381 |
| 33 | 796413 |
[0,1,11,58,177,437,894,1659,2813,4502,6836,10008, 14121,19449,26117,34372,44422,56597,71044,88160, 108115,131328,158074,188773,223604,263172,307719, 357715,413493,475690,544480,620632,704381,796413] |