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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 8 |
| 3 | 28 |
| 4 | 48 |
| 5 | 104 |
| 6 | 160 |
| 7 | 280 |
| 8 | 400 |
| 9 | 620 |
| 10 | 840 |
| 11 | 1204 |
| 12 | 1568 |
| 13 | 2128 |
| 14 | 2688 |
| 15 | 3504 |
| 16 | 4320 |
| 17 | 5460 |
| 18 | 6600 |
| 19 | 8140 |
| 20 | 9680 |
| 21 | 11704 |
| 22 | 13728 |
| 23 | 16328 |
| 24 | 18928 |
| 25 | 22204 |
| 26 | 25480 |
| 27 | 29540 |
| 28 | 33600 |
| 29 | 38560 |
| 30 | 43520 |
| 31 | 49504 |
| 32 | 55488 |
| 33 | 62628 |
| 34 | 69768 |
| 35 | 78204 |
| 36 | 86640 |
| 37 | 96520 |
| 38 | 106400 |
| 39 | 117880 |
| 40 | 129360 |
[4,8,28,48,104,160,280,400,620,840,1204,1568,2128, 2688,3504,4320,5460,6600,8140,9680,11704,13728, 16328,18928,22204,25480,29540,33600,38560,43520, 49504,55488,62628,69768,78204,86640,96520,106400, 117880,129360] |