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| n | a(n) |
|---|---|
| 1 | 31 |
| 2 | 191 |
| 3 | 5119 |
| 4 | 114687 |
| 5 | 46137343 |
| 6 | 872415231 |
| 7 | 292057776127 |
| 8 | 5222680231935 |
| 9 | 1618481116086271 |
| 10 | 8358680908399640575 |
| 11 | 142962266571249025023 |
| 12 | 698910239464707491627007 |
| 13 | 198263834416799184651812863 |
| 14 | 3326963855579459488791396351 |
| 15 | 930930909542605966724141416447 |
[31,191,5119,114687,46137343,872415231, 292057776127,5222680231935,1618481116086271, 8358680908399640575,142962266571249025023, 698910239464707491627007, 198263834416799184651812863, 3326963855579459488791396351, 930930909542605966724141416447] |