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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 27 |
| 3 | 78 |
| 4 | 188 |
| 5 | 400 |
| 6 | 777 |
| 7 | 1406 |
| 8 | 2403 |
| 9 | 3917 |
| 10 | 6136 |
| 11 | 9293 |
| 12 | 13670 |
| 13 | 19603 |
| 14 | 27485 |
| 15 | 37773 |
| 16 | 50993 |
| 17 | 67744 |
| 18 | 88703 |
| 19 | 114628 |
| 20 | 146366 |
| 21 | 184857 |
| 22 | 231139 |
| 23 | 286352 |
| 24 | 351742 |
| 25 | 428669 |
| 26 | 518610 |
| 27 | 623164 |
| 28 | 744055 |
| 29 | 883138 |
| 30 | 1042406 |
| 31 | 1223994 |
| 32 | 1430184 |
| 33 | 1663408 |
| 34 | 1926254 |
| 35 | 2221471 |
| 36 | 2551974 |
| 37 | 2920848 |
| 38 | 3331353 |
| 39 | 3786930 |
| 40 | 4291206 |
| 41 | 4847999 |
| 42 | 5461321 |
| 43 | 6135384 |
| 44 | 6874604 |
[1,7,27,78,188,400,777,1406,2403,3917,6136,9293, 13670,19603,27485,37773,50993,67744,88703,114628, 146366,184857,231139,286352,351742,428669,518610, 623164,744055,883138,1042406,1223994,1430184, 1663408,1926254,2221471,2551974,2920848,3331353, 3786930,4291206,4847999,5461321,6135384,6874604] |