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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 136 |
| 3 | 6520 |
| 4 | 324682 |
| 5 | 16205218 |
| 6 | 808928836 |
| 7 | 40380275500 |
| 8 | 2015711853262 |
| 9 | 100620769519078 |
| 10 | 5022810805035976 |
| 11 | 250729829501722000 |
| 12 | 12515989521112631602 |
| 13 | 624776054783641480618 |
| 14 | 31187715359825604175756 |
[5,136,6520,324682,16205218,808928836,40380275500, 2015711853262,100620769519078,5022810805035976, 250729829501722000,12515989521112631602, 624776054783641480618,31187715359825604175756] |