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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 12 |
| 2 | 732 |
| 3 | 109332 |
| 4 | 30406812 |
| 5 | 13587056052 |
| 6 | 8904250650492 |
| 7 | 8045727017033172 |
| 8 | 9586782871360007772 |
| 9 | 14564334832981893064692 |
| 10 | 27477080512619965247054652 |
| 11 | 63024425641459625896776174612 |
| 12 | 172720667970739808701108304367132 |
| 13 | 557383361208023769780400587942586932 |
| 14 | 2092050338949043346342979863638489321212 |
| 15 | 9036239176876728629700436615577988154925652 |
[1,12,732,109332,30406812,13587056052, 8904250650492,8045727017033172, 9586782871360007772,14564334832981893064692, 27477080512619965247054652, 63024425641459625896776174612, 172720667970739808701108304367132, 557383361208023769780400587942586932, 2092050338949043346342979863638489321212, 9036239176876728629700436615577988154925652] |