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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 4 |
| 2 | 24 |
| 3 | 60 |
| 4 | 144 |
| 5 | 260 |
| 6 | 456 |
| 7 | 700 |
| 8 | 1056 |
| 9 | 1476 |
| 10 | 2040 |
| 11 | 2684 |
| 12 | 3504 |
| 13 | 4420 |
| 14 | 5544 |
| 15 | 6780 |
| 16 | 8256 |
| 17 | 9860 |
| 18 | 11736 |
| 19 | 13756 |
| 20 | 16080 |
| 21 | 18564 |
| 22 | 21384 |
| 23 | 24380 |
| 24 | 27744 |
| 25 | 31300 |
| 26 | 35256 |
| 27 | 39420 |
| 28 | 44016 |
| 29 | 48836 |
| 30 | 54120 |
| 31 | 59644 |
| 32 | 65664 |
| 33 | 71940 |
| 34 | 78744 |
| 35 | 85820 |
| 36 | 93456 |
| 37 | 101380 |
| 38 | 109896 |
| 39 | 118716 |
[0,4,24,60,144,260,456,700,1056,1476,2040,2684, 3504,4420,5544,6780,8256,9860,11736,13756,16080, 18564,21384,24380,27744,31300,35256,39420,44016, 48836,54120,59644,65664,71940,78744,85820,93456, 101380,109896,118716] |