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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 13 |
| 4 | 34 |
| 5 | 68 |
| 6 | 117 |
| 7 | 187 |
| 8 | 282 |
| 9 | 406 |
| 10 | 559 |
| 11 | 743 |
| 12 | 966 |
| 13 | 1232 |
| 14 | 1545 |
| 15 | 1899 |
| 16 | 2304 |
| 17 | 2764 |
| 18 | 3285 |
| 19 | 3869 |
| 20 | 4512 |
| 21 | 5222 |
| 22 | 6005 |
| 23 | 6867 |
| 24 | 7812 |
| 25 | 8828 |
| 26 | 9931 |
| 27 | 11125 |
| 28 | 12412 |
| 29 | 13798 |
| 30 | 15271 |
| 31 | 16847 |
| 32 | 18532 |
| 33 | 20330 |
| 34 | 22239 |
| 35 | 24255 |
| 36 | 26394 |
| 37 | 28660 |
| 38 | 31055 |
| 39 | 33573 |
| 40 | 36222 |
[0,3,13,34,68,117,187,282,406,559,743,966,1232, 1545,1899,2304,2764,3285,3869,4512,5222,6005,6867, 7812,8828,9931,11125,12412,13798,15271,16847, 18532,20330,22239,24255,26394,28660,31055,33573, 36222] |