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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 52 |
| 3 | 877 |
| 4 | 21147 |
| 5 | 678570 |
| 6 | 27644437 |
| 7 | 1382958545 |
| 8 | 82864869804 |
| 9 | 5832742205057 |
| 10 | 474869816156751 |
| 11 | 44152005855084346 |
| 12 | 4638590332229999353 |
| 13 | 545717047936059989389 |
| 14 | 71339801938860275191172 |
[1,5,52,877,21147,678570,27644437,1382958545, 82864869804,5832742205057,474869816156751, 44152005855084346,4638590332229999353, 545717047936059989389,71339801938860275191172] |