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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 16 |
| 3 | 192 |
| 4 | 1456 |
| 5 | 5416 |
| 6 | 19168 |
| 7 | 44000 |
| 8 | 87840 |
| 9 | 176840 |
| 10 | 330640 |
| 11 | 581600 |
| 12 | 896568 |
| 13 | 1326544 |
| 14 | 2092136 |
| 15 | 3023816 |
| 16 | 4352128 |
| 17 | 5828984 |
| 18 | 7922344 |
| 19 | 10514024 |
| 20 | 13923280 |
| 21 | 18216176 |
| 22 | 22709264 |
| 23 | 29145424 |
| 24 | 36121112 |
| 25 | 44259112 |
| 26 | 55376432 |
| 27 | 67366040 |
| 28 | 81514856 |
| 29 | 96903152 |
| 30 | 115237224 |
| 31 | 137454408 |
[0,16,192,1456,5416,19168,44000,87840,176840, 330640,581600,896568,1326544,2092136,3023816, 4352128,5828984,7922344,10514024,13923280, 18216176,22709264,29145424,36121112,44259112, 55376432,67366040,81514856,96903152,115237224, 137454408] |