The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 150 |
| 3 | 810 |
| 4 | 1452 |
| 5 | 1872 |
| 6 | 18252 |
| 7 | 87120 |
| 8 | 106032 |
| 9 | 242172 |
| 10 | 333270 |
| 11 | 362952 |
| 12 | 712890 |
| 13 | 1968750 |
| 14 | 2763600 |
| 15 | 3198132 |
| 16 | 5767380 |
| 17 | 10551420 |
| 18 | 16451580 |
| 19 | 18469440 |
| 20 | 23230350 |
| 21 | 25498620 |
| 22 | 30468672 |
| 23 | 31955502 |
| 24 | 34752252 |
| 25 | 39768102 |
| 26 | 40825920 |
| 27 | 56770560 |
[12,150,810,1452,1872,18252,87120,106032,242172, 333270,362952,712890,1968750,2763600,3198132, 5767380,10551420,16451580,18469440,23230350, 25498620,30468672,31955502,34752252,39768102, 40825920,56770560] |