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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 17 |
| 3 | 485 |
| 4 | 18817 |
| 5 | 930249 |
| 6 | 55989361 |
| 7 | 3974443213 |
| 8 | 325142092801 |
| 9 | 30122754096401 |
| 10 | 3117419602578001 |
| 11 | 356452534779818421 |
| 12 | 44627167107085622401 |
| 13 | 6071840759403431812825 |
| 14 | 892064955046043465408177 |
| 15 | 140751338790698080509966749 |
| 16 | 23737154316161495960243527681 |
[1,1,17,485,18817,930249,55989361,3974443213, 325142092801,30122754096401,3117419602578001, 356452534779818421,44627167107085622401, 6071840759403431812825,892064955046043465408177, 140751338790698080509966749, 23737154316161495960243527681] |