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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 4 |
| 3 | 4 |
| 4 | 16 |
| 5 | 28 |
| 6 | 16 |
| 7 | 50 |
| 8 | 272 |
| 9 | 272 |
| 10 | 50 |
| 11 | 144 |
| 12 | 1998 |
| 13 | 5972 |
| 14 | 1998 |
| 15 | 144 |
| 16 | 422 |
| 17 | 13260 |
| 18 | 115583 |
| 19 | 115583 |
| 20 | 13260 |
| 21 | 422 |
| 22 | 1268 |
| 23 | 94996 |
| 24 | 2049855 |
| 25 | 6074096 |
| 26 | 2049855 |
| 27 | 94996 |
| 28 | 1268 |
| 29 | 3823 |
| 30 | 691229 |
| 31 | 37872601 |
| 32 | 286808607 |
| 33 | 286808607 |
| 34 | 37872601 |
| 35 | 691229 |
| 36 | 3823 |
| 37 | 11472 |
| 38 | 4926082 |
[4,4,4,16,28,16,50,272,272,50,144,1998,5972,1998, 144,422,13260,115583,115583,13260,422,1268,94996, 2049855,6074096,2049855,94996,1268,3823,691229, 37872601,286808607,286808607,37872601,691229,3823, 11472,4926082] |