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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 100 |
| 4 | 392 |
| 5 | 1554 |
| 6 | 3486 |
| 7 | 9690 |
| 8 | 18942 |
| 9 | 38610 |
| 10 | 65268 |
| 11 | 125116 |
| 12 | 186870 |
| 13 | 324646 |
| 14 | 472546 |
| 15 | 713354 |
| 16 | 1003888 |
| 17 | 1531908 |
| 18 | 2000638 |
| 19 | 2920970 |
| 20 | 3780950 |
| 21 | 5102290 |
| 22 | 6521198 |
| 23 | 8914618 |
| 24 | 10889352 |
| 25 | 14372890 |
| 26 | 17669634 |
| 27 | 22409814 |
| 28 | 27098466 |
| 29 | 34726578 |
| 30 | 40504652 |
| 31 | 51127420 |
| 32 | 60504552 |
[1,12,100,392,1554,3486,9690,18942,38610,65268, 125116,186870,324646,472546,713354,1003888, 1531908,2000638,2920970,3780950,5102290,6521198, 8914618,10889352,14372890,17669634,22409814, 27098466,34726578,40504652,51127420,60504552] |