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| n | a(n) |
|---|---|
| 0 | 15 |
| 1 | 46 |
| 2 | 107 |
| 3 | 153 |
| 4 | 413 |
| 5 | 566 |
| 6 | 1545 |
| 7 | 5201 |
| 8 | 157575 |
| 9 | 477926 |
| 10 | 1113427 |
| 11 | 1591353 |
| 12 | 4296133 |
| 13 | 5887486 |
| 14 | 16071105 |
| 15 | 54100801 |
| 16 | 1639095135 |
| 17 | 4971386206 |
| 18 | 11581867547 |
| 19 | 16553253753 |
| 20 | 44688375053 |
| 21 | 61241628806 |
| 22 | 167171632665 |
| 23 | 562756526801 |
| 24 | 17049867436695 |
| 25 | 51712358836886 |
[15,46,107,153,413,566,1545,5201,157575,477926, 1113427,1591353,4296133,5887486,16071105,54100801, 1639095135,4971386206,11581867547,16553253753, 44688375053,61241628806,167171632665,562756526801, 17049867436695,51712358836886] |