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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 656 |
| 3 | 49036 |
| 4 | 4443292 |
| 5 | 378212944 |
| 6 | 32995092992 |
| 7 | 2852526229300 |
| 8 | 247462638659680 |
| 9 | 21440004040979204 |
| 10 | 1858466937288261508 |
| 11 | 161065823451839652032 |
| 12 | 13959918564726559991320 |
| 13 | 1209903218593886396425592 |
[5,656,49036,4443292,378212944,32995092992, 2852526229300,247462638659680,21440004040979204, 1858466937288261508,161065823451839652032, 13959918564726559991320,1209903218593886396425592] |