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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 1439 |
| 3 | 45843 |
| 4 | 2253537 |
| 5 | 105551542 |
| 6 | 4886330995 |
| 7 | 227951140324 |
| 8 | 10611747125529 |
| 9 | 494205872758082 |
| 10 | 23013994189839780 |
| 11 | 1071725356148151651 |
| 12 | 49908553928282027953 |
| 13 | 2324157974481616112739 |
| 14 | 108232267483106900191660 |
[13,1439,45843,2253537,105551542,4886330995, 227951140324,10611747125529,494205872758082, 23013994189839780,1071725356148151651, 49908553928282027953,2324157974481616112739, 108232267483106900191660] |