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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 23 |
| 2 | 483 |
| 3 | 9177 |
| 4 | 156561 |
| 5 | 2398095 |
| 6 | 33725475 |
| 7 | 465686865 |
| 8 | 6952917825 |
| 9 | 114751084455 |
| 10 | 1935277553475 |
| 11 | 32136707104425 |
| 12 | 567545846123025 |
| 13 | 11263156788858975 |
| 14 | 229832929643191875 |
| 15 | 4560180147352454625 |
[1,23,483,9177,156561,2398095,33725475,465686865, 6952917825,114751084455,1935277553475, 32136707104425,567545846123025,11263156788858975, 229832929643191875,4560180147352454625] |