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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 6 |
| 4 | 16 |
| 5 | 37 |
| 6 | 73 |
| 7 | 133 |
| 8 | 227 |
| 9 | 370 |
| 10 | 580 |
| 11 | 881 |
| 12 | 1305 |
| 13 | 1890 |
| 14 | 2687 |
| 15 | 3756 |
| 16 | 5175 |
| 17 | 7037 |
| 18 | 9460 |
| 19 | 12582 |
| 20 | 16577 |
| 21 | 21649 |
| 22 | 28048 |
| 23 | 36070 |
| 24 | 46072 |
| 25 | 58474 |
| 26 | 73778 |
| 27 | 92574 |
| 28 | 115559 |
| 29 | 143551 |
| 30 | 177510 |
| 31 | 218556 |
| 32 | 267997 |
| 33 | 327355 |
| 34 | 398394 |
| 35 | 483162 |
| 36 | 584023 |
| 37 | 703708 |
| 38 | 845361 |
| 39 | 1012600 |
| 40 | 1209573 |
[0,0,1,6,16,37,73,133,227,370,580,881,1305,1890, 2687,3756,5175,7037,9460,12582,16577,21649,28048, 36070,46072,58474,73778,92574,115559,143551, 177510,218556,267997,327355,398394,483162,584023, 703708,845361,1012600,1209573] |