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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 135 |
| 3 | 364 |
| 4 | 765 |
| 5 | 1386 |
| 6 | 2275 |
| 7 | 3480 |
| 8 | 5049 |
| 9 | 7030 |
| 10 | 9471 |
| 11 | 12420 |
| 12 | 15925 |
| 13 | 20034 |
| 14 | 24795 |
| 15 | 30256 |
| 16 | 36465 |
| 17 | 43470 |
| 18 | 51319 |
| 19 | 60060 |
| 20 | 69741 |
| 21 | 80410 |
| 22 | 92115 |
| 23 | 104904 |
| 24 | 118825 |
| 25 | 133926 |
| 26 | 150255 |
| 27 | 167860 |
| 28 | 186789 |
| 29 | 207090 |
| 30 | 228811 |
| 31 | 252000 |
| 32 | 276705 |
| 33 | 302974 |
| 34 | 330855 |
| 35 | 360396 |
| 36 | 391645 |
[1,30,135,364,765,1386,2275,3480,5049,7030,9471, 12420,15925,20034,24795,30256,36465,43470,51319, 60060,69741,80410,92115,104904,118825,133926, 150255,167860,186789,207090,228811,252000,276705, 302974,330855,360396,391645] |