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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 13 |
| 3 | 638 |
| 4 | 118949 |
| 5 | 42483668 |
| 6 | 23524514635 |
| 7 | 18477841853059 |
| 8 | 19526400231564564 |
| 9 | 26714255854638149145 |
| 10 | 45938634690184528585855 |
| 11 | 96990967579564469350287613 |
| 12 | 246664446832722382952639028437 |
| 13 | 743740463651636548809953508690270 |
| 14 | 2623456914417867939801667337352637825 |
[1,1,13,638,118949,42483668,23524514635, 18477841853059,19526400231564564, 26714255854638149145,45938634690184528585855, 96990967579564469350287613, 246664446832722382952639028437, 743740463651636548809953508690270, 2623456914417867939801667337352637825] |