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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 40 |
| 3 | 220 |
| 4 | 980 |
| 5 | 2940 |
| 6 | 11016 |
| 7 | 10080 |
| 8 | 44064 |
| 9 | 55080 |
| 10 | 112000 |
| 11 | 245344 |
| 12 | 220320 |
| 13 | 308448 |
| 14 | 484704 |
| 15 | 550368 |
| 16 | 2590720 |
| 17 | 38509344 |
| 18 | 1349460 |
| 19 | 3248000 |
| 20 | 7772160 |
| 21 | 2423520 |
| 22 | 5464480 |
| 23 | 51482340 |
| 24 | 14837760 |
| 25 | 6301152 |
| 26 | 18135040 |
| 27 | 19872864 |
| 28 | 10795680 |
| 29 | 61116768 |
| 30 | 45323520 |
| 31 | 120513096 |
| 32 | 67298560 |
| 33 | 32387040 |
| 34 | 118295408 |
| 35 | 49660128 |
| 36 | 86526720 |
| 37 | 147671040 |
| 38 | 225392640 |
| 39 | 105754880 |
| 40 | 92252160 |
| 41 | 939050112 |
| 42 | 163215360 |
[1,40,220,980,2940,11016,10080,44064,55080,112000, 245344,220320,308448,484704,550368,2590720, 38509344,1349460,3248000,7772160,2423520,5464480, 51482340,14837760,6301152,18135040,19872864, 10795680,61116768,45323520,120513096,67298560, 32387040,118295408,49660128,86526720,147671040, 225392640,105754880,92252160,939050112,163215360] |