The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 146 |
| 3 | 1232 |
| 4 | 15274 |
| 5 | 249402 |
| 6 | 3707781 |
| 7 | 46887621 |
| 8 | 578160718 |
| 9 | 7394096617 |
| 10 | 96338727461 |
| 11 | 1258078944815 |
| 12 | 16370595753240 |
| 13 | 212274372772624 |
| 14 | 2750178418606822 |
| 15 | 35652972674573032 |
| 16 | 462472339632802800 |
[12,146,1232,15274,249402,3707781,46887621, 578160718,7394096617,96338727461,1258078944815, 16370595753240,212274372772624,2750178418606822, 35652972674573032,462472339632802800] |