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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 72 |
| 3 | 180 |
| 4 | 192 |
| 5 | 228 |
| 6 | 240 |
| 7 | 312 |
| 8 | 600 |
| 9 | 1092 |
| 10 | 1152 |
| 11 | 1428 |
| 12 | 1488 |
| 13 | 1608 |
| 14 | 1620 |
| 15 | 1872 |
| 16 | 2088 |
| 17 | 2112 |
| 18 | 2592 |
| 19 | 2688 |
| 20 | 3000 |
| 21 | 3168 |
| 22 | 3252 |
| 23 | 3360 |
| 24 | 3528 |
| 25 | 4272 |
| 26 | 4548 |
| 27 | 4800 |
| 28 | 5640 |
| 29 | 6552 |
| 30 | 6960 |
| 31 | 7488 |
| 32 | 7560 |
| 33 | 8088 |
| 34 | 8292 |
| 35 | 8388 |
| 36 | 8820 |
| 37 | 9000 |
| 38 | 9012 |
| 39 | 9240 |
| 40 | 9768 |
| 41 | 10008 |
| 42 | 10068 |
| 43 | 10272 |
[4,72,180,192,228,240,312,600,1092,1152,1428,1488, 1608,1620,1872,2088,2112,2592,2688,3000,3168,3252, 3360,3528,4272,4548,4800,5640,6552,6960,7488,7560, 8088,8292,8388,8820,9000,9012,9240,9768,10008, 10068,10272] |