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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 42159238 |
| 3 | 106586385708 |
| 4 | 25519311555595 |
| 5 | 2416548374532292 |
| 6 | 151442406160585540 |
| 7 | 7894403946290257968 |
| 8 | 379961855272982538127 |
| 9 | 17735784941946000072572 |
| 10 | 822369813313954835099742 |
| 11 | 38353581871007817965010668 |
| 12 | 1811813065380635747237663856 |
[0,1,42159238,106586385708,25519311555595, 2416548374532292,151442406160585540, 7894403946290257968,379961855272982538127, 17735784941946000072572,822369813313954835099742, 38353581871007817965010668, 1811813065380635747237663856] |