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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 56 |
| 3 | 260 |
| 4 | 992 |
| 5 | 1320 |
| 6 | 1976 |
| 7 | 2156 |
| 8 | 2754 |
| 9 | 3696 |
| 10 | 5520 |
| 11 | 13800 |
| 12 | 16256 |
| 13 | 19872 |
| 14 | 22560 |
| 15 | 23688 |
| 16 | 25232 |
| 17 | 41072 |
| 18 | 87000 |
| 19 | 89964 |
| 20 | 133984 |
| 21 | 145888 |
| 22 | 366720 |
| 23 | 785808 |
| 24 | 851760 |
| 25 | 1100864 |
| 26 | 1235052 |
| 27 | 1270208 |
| 28 | 1439552 |
| 29 | 1470720 |
| 30 | 2129400 |
| 31 | 2237888 |
| 32 | 4729664 |
[12,56,260,992,1320,1976,2156,2754,3696,5520, 13800,16256,19872,22560,23688,25232,41072,87000, 89964,133984,145888,366720,785808,851760,1100864, 1235052,1270208,1439552,1470720,2129400,2237888, 4729664] |