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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 17 |
| 3 | 746 |
| 4 | 66418 |
| 5 | 9843707 |
| 6 | 2187941520 |
| 7 | 680615139257 |
| 8 | 282199700198462 |
| 9 | 150389915598653924 |
| 10 | 100155578743010743914 |
| 11 | 81505577512720707466924 |
| 12 | 79580089689432499741178617 |
| 13 | 91814299713761739807846854872 |
[1,1,17,746,66418,9843707,2187941520,680615139257, 282199700198462,150389915598653924, 100155578743010743914,81505577512720707466924, 79580089689432499741178617, 91814299713761739807846854872] |