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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 8 |
| 3 | 21 |
| 4 | 46 |
| 5 | 83 |
| 6 | 136 |
| 7 | 210 |
| 8 | 306 |
| 9 | 426 |
| 10 | 575 |
| 11 | 758 |
| 12 | 972 |
| 13 | 1223 |
| 14 | 1519 |
| 15 | 1855 |
| 16 | 2236 |
| 17 | 2669 |
| 18 | 3156 |
| 19 | 3694 |
| 20 | 4290 |
| 21 | 4956 |
| 22 | 5678 |
| 23 | 6467 |
| 24 | 7332 |
| 25 | 8269 |
| 26 | 9278 |
| 27 | 10368 |
| 28 | 11548 |
| 29 | 12804 |
| 30 | 14148 |
| 31 | 15593 |
| 32 | 17126 |
| 33 | 18753 |
| 34 | 20485 |
| 35 | 22325 |
| 36 | 24262 |
| 37 | 26308 |
| 38 | 28481 |
| 39 | 30756 |
| 40 | 33148 |
[0,2,8,21,46,83,136,210,306,426,575,758,972,1223, 1519,1855,2236,2669,3156,3694,4290,4956,5678,6467, 7332,8269,9278,10368,11548,12804,14148,15593, 17126,18753,20485,22325,24262,26308,28481,30756, 33148] |