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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 6 |
| 2 | 23 |
| 3 | 78 |
| 4 | 207 |
| 5 | 458 |
| 6 | 891 |
| 7 | 1578 |
| 8 | 2603 |
| 9 | 4062 |
| 10 | 6063 |
| 11 | 8726 |
| 12 | 12183 |
| 13 | 16578 |
| 14 | 22067 |
| 15 | 28818 |
| 16 | 37011 |
| 17 | 46838 |
| 18 | 58503 |
| 19 | 72222 |
| 20 | 88223 |
| 21 | 106746 |
| 22 | 128043 |
| 23 | 152378 |
| 24 | 180027 |
| 25 | 211278 |
| 26 | 246431 |
| 27 | 285798 |
| 28 | 329703 |
| 29 | 378482 |
| 30 | 432483 |
| 31 | 492066 |
| 32 | 557603 |
| 33 | 629478 |
| 34 | 708087 |
| 35 | 793838 |
| 36 | 887151 |
| 37 | 988458 |
[2,6,23,78,207,458,891,1578,2603,4062,6063,8726, 12183,16578,22067,28818,37011,46838,58503,72222, 88223,106746,128043,152378,180027,211278,246431, 285798,329703,378482,432483,492066,557603,629478, 708087,793838,887151,988458] |