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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 6 |
| 3 | 122 |
| 4 | 5078 |
| 5 | 345505 |
| 6 | 34213860 |
| 7 | 4603101446 |
| 8 | 804243898482 |
| 9 | 176730623264183 |
| 10 | 47683198300431882 |
| 11 | 15499319876511204976 |
| 12 | 5976325729384679918608 |
| 13 | 2698353156235609436839802 |
| 14 | 1410878142725377941788380644 |
| 15 | 846101644437201951350608133454 |
| 16 | 577059618761577086070620051571226 |
| 17 | 444244804743417659840852107522214683 |
[1,1,6,122,5078,345505,34213860,4603101446, 804243898482,176730623264183,47683198300431882, 15499319876511204976,5976325729384679918608, 2698353156235609436839802, 1410878142725377941788380644, 846101644437201951350608133454, 577059618761577086070620051571226, 444244804743417659840852107522214683] |