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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 15 |
| 3 | 76 |
| 4 | 243 |
| 5 | 598 |
| 6 | 1249 |
| 7 | 2326 |
| 8 | 3984 |
| 9 | 6405 |
| 10 | 9786 |
| 11 | 14363 |
| 12 | 20378 |
| 13 | 28117 |
| 14 | 37864 |
| 15 | 49965 |
| 16 | 64740 |
| 17 | 82591 |
| 18 | 103877 |
| 19 | 129062 |
| 20 | 158543 |
| 21 | 192832 |
| 22 | 232371 |
| 23 | 277740 |
| 24 | 329399 |
| 25 | 388002 |
| 26 | 454043 |
| 27 | 528220 |
| 28 | 611087 |
| 29 | 703402 |
| 30 | 805721 |
| 31 | 918898 |
| 32 | 1043520 |
| 33 | 1180469 |
[0,1,15,76,243,598,1249,2326,3984,6405,9786,14363, 20378,28117,37864,49965,64740,82591,103877,129062, 158543,192832,232371,277740,329399,388002,454043, 528220,611087,703402,805721,918898,1043520, 1180469] |