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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 8 |
| 8 | 26 |
| 9 | 196 |
| 10 | 5064 |
| 11 | 992336 |
| 12 | 5025184408 |
| 13 | 4986671393704544 |
| 14 | 25058943335463698842360448 |
| 15 | 124960715887419957580506993886784668778624 |
| 16 | 3131383498581835095655557937198087383978439131276209799741457913600 |
[1,1,2,2,3,4,8,26,196,5064,992336,5025184408, 4986671393704544,25058943335463698842360448, 124960715887419957580506993886784668778624, 31313834985818350956555579371980873839784391312762\ 09799741457913600] |