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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 24 |
| 2 | 200 |
| 3 | 1052 |
| 4 | 3994 |
| 5 | 12292 |
| 6 | 32088 |
| 7 | 74320 |
| 8 | 155986 |
| 9 | 303512 |
| 10 | 553520 |
| 11 | 958636 |
| 12 | 1586554 |
| 13 | 2529708 |
| 14 | 3900872 |
| 15 | 5848984 |
| 16 | 8548370 |
| 17 | 12224144 |
| 18 | 17131328 |
| 19 | 23593828 |
| 20 | 31968890 |
| 21 | 42705180 |
| 22 | 56285952 |
| 23 | 73313624 |
| 24 | 94423970 |
| 25 | 120405112 |
| 26 | 152074032 |
| 27 | 190440188 |
| 28 | 236532474 |
| 29 | 291620356 |
[1,24,200,1052,3994,12292,32088,74320,155986, 303512,553520,958636,1586554,2529708,3900872, 5848984,8548370,12224144,17131328,23593828, 31968890,42705180,56285952,73313624,94423970, 120405112,152074032,190440188,236532474,291620356] |