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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 30 |
| 3 | 56 |
| 4 | 306 |
| 5 | 380 |
| 6 | 858 |
| 7 | 992 |
| 8 | 1722 |
| 9 | 2552 |
| 10 | 2862 |
| 11 | 16256 |
| 12 | 30704 |
| 13 | 66198 |
| 14 | 73712 |
| 15 | 86142 |
| 16 | 249500 |
| 17 | 629802 |
| 18 | 1703872 |
| 19 | 6127552 |
| 20 | 16191736 |
| 21 | 19127502 |
| 22 | 35359900 |
| 23 | 67100672 |
| 24 | 101999900 |
| 25 | 172173762 |
| 26 | 182552538 |
| 27 | 266677578 |
| 28 | 575688042 |
| 29 | 1180712682 |
| 30 | 2214408306 |
| 31 | 6179139056 |
| 32 | 17179738112 |
| 33 | 21083999500 |
[12,30,56,306,380,858,992,1722,2552,2862,16256, 30704,66198,73712,86142,249500,629802,1703872, 6127552,16191736,19127502,35359900,67100672, 101999900,172173762,182552538,266677578,575688042, 1180712682,2214408306,6179139056,17179738112, 21083999500] |