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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 16 |
| 4 | 77 |
| 5 | 319 |
| 6 | 920 |
| 7 | 2397 |
| 8 | 5278 |
| 9 | 10874 |
| 10 | 20355 |
| 11 | 36390 |
| 12 | 61171 |
| 13 | 99441 |
| 14 | 154882 |
| 15 | 235179 |
| 16 | 346060 |
| 17 | 499172 |
| 18 | 702933 |
| 19 | 974124 |
| 20 | 1324585 |
| 21 | 1777555 |
| 22 | 2349116 |
| 23 | 3070441 |
| 24 | 3962762 |
| 25 | 5066814 |
| 26 | 6409975 |
| 27 | 8044322 |
| 28 | 10004463 |
| 29 | 12355749 |
| 30 | 15141190 |
| 31 | 18441495 |
| 32 | 22309336 |
| 33 | 26843016 |
| 34 | 32106217 |
[0,1,16,77,319,920,2397,5278,10874,20355,36390, 61171,99441,154882,235179,346060,499172,702933, 974124,1324585,1777555,2349116,3070441,3962762, 5066814,6409975,8044322,10004463,12355749, 15141190,18441495,22309336,26843016,32106217] |