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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 16 |
| 4 | 28 |
| 5 | 80 |
| 6 | 112 |
| 7 | 320 |
| 8 | 280 |
| 9 | 784 |
| 10 | 560 |
| 11 | 1600 |
| 12 | 1120 |
| 13 | 10000 |
| 14 | 2240 |
| 15 | 3920 |
| 16 | 2800 |
| 17 | 25600 |
| 18 | 5600 |
| 19 | 1310720 |
| 20 | 6160 |
| 21 | 15680 |
| 22 | 11200 |
| 23 | 48400 |
| 24 | 12320 |
| 25 | 110000 |
| 26 | 70000 |
| 27 | 39200 |
| 28 | 24640 |
| 29 | 6553600 |
| 30 | 30800 |
| 31 | 5368709120 |
| 32 | 36400 |
| 33 | 78400 |
| 34 | 179200 |
| 35 | 440000 |
| 36 | 61600 |
| 37 | 343597383680 |
| 38 | 1210000 |
| 39 | 490000 |
| 40 | 80080 |
[1,4,16,28,80,112,320,280,784,560,1600,1120,10000, 2240,3920,2800,25600,5600,1310720,6160,15680, 11200,48400,12320,110000,70000,39200,24640, 6553600,30800,5368709120,36400,78400,179200, 440000,61600,343597383680,1210000,490000,80080] |