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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 8 |
| 3 | 15 |
| 4 | 28 |
| 5 | 46 |
| 6 | 76 |
| 7 | 117 |
| 8 | 180 |
| 9 | 266 |
| 10 | 391 |
| 11 | 559 |
| 12 | 796 |
| 13 | 1110 |
| 14 | 1540 |
| 15 | 2105 |
| 16 | 2862 |
| 17 | 3845 |
| 18 | 5141 |
| 19 | 6807 |
| 20 | 8972 |
| 21 | 11732 |
| 22 | 15274 |
| 23 | 19752 |
| 24 | 25442 |
| 25 | 32581 |
| 26 | 41568 |
| 27 | 52769 |
| 28 | 66756 |
| 29 | 84077 |
| 30 | 105554 |
| 31 | 131994 |
| 32 | 164565 |
| 33 | 204449 |
| 34 | 253291 |
| 35 | 312798 |
| 36 | 385284 |
| 37 | 473182 |
| 38 | 579721 |
| 39 | 708352 |
[1,3,8,15,28,46,76,117,180,266,391,559,796,1110, 1540,2105,2862,3845,5141,6807,8972,11732,15274, 19752,25442,32581,41568,52769,66756,84077,105554, 131994,164565,204449,253291,312798,385284,473182, 579721,708352] |