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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 156 |
| 3 | 1143 |
| 4 | 10579 |
| 5 | 97005 |
| 6 | 862112 |
| 7 | 7800563 |
| 8 | 70510494 |
| 9 | 636242985 |
| 10 | 5748756544 |
| 11 | 51939316305 |
| 12 | 469229062104 |
| 13 | 4239543728876 |
| 14 | 38304792722218 |
| 15 | 346088290423542 |
| 16 | 3126976424671238 |
| 17 | 28252874739113446 |
| 18 | 255270676137336183 |
[13,156,1143,10579,97005,862112,7800563,70510494, 636242985,5748756544,51939316305,469229062104, 4239543728876,38304792722218,346088290423542, 3126976424671238,28252874739113446, 255270676137336183] |