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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 66 |
| 5 | 153 |
| 6 | 231 |
| 7 | 351 |
| 8 | 465 |
| 9 | 741 |
| 10 | 1326 |
| 11 | 2556 |
| 12 | 5671 |
| 13 | 6786 |
| 14 | 14535 |
| 15 | 21115 |
| 16 | 24531 |
| 17 | 25651 |
| 18 | 33411 |
| 19 | 43956 |
| 20 | 57291 |
| 21 | 58311 |
| 22 | 71253 |
| 23 | 92665 |
| 24 | 95266 |
| 25 | 123753 |
| 26 | 153181 |
| 27 | 167331 |
| 28 | 278631 |
| 29 | 325221 |
| 30 | 341551 |
| 31 | 351541 |
| 32 | 372816 |
| 33 | 459361 |
| 34 | 491536 |
| 35 | 516636 |
| 36 | 521731 |
| 37 | 567645 |
| 38 | 572985 |
| 39 | 613278 |
[1,3,6,66,153,231,351,465,741,1326,2556,5671,6786, 14535,21115,24531,25651,33411,43956,57291,58311, 71253,92665,95266,123753,153181,167331,278631, 325221,341551,351541,372816,459361,491536,516636, 521731,567645,572985,613278] |