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| n | a(n) |
|---|---|
| 1 | 28 |
| 2 | 140 |
| 3 | 140 |
| 4 | 14 |
| 5 | 728 |
| 6 | 3696 |
| 7 | 3273 |
| 8 | 323 |
| 9 | 10516 |
| 10 | 37590 |
| 11 | 22872 |
| 12 | 1288 |
| 13 | 52828 |
| 14 | 199384 |
| 15 | 125466 |
| 16 | 8034 |
| 17 | 251361 |
| 18 | 795924 |
| 19 | 417829 |
| 20 | 19994 |
| 21 | 734712 |
| 22 | 2454383 |
| 23 | 1348173 |
| 24 | 72589 |
| 25 | 2214440 |
| 26 | 6602880 |
| 27 | 3229480 |
| 28 | 143081 |
| 29 | 4945844 |
| 30 | 15462250 |
| 31 | 7894324 |
| 32 | 387000 |
| 33 | 11616040 |
[28,140,140,14,728,3696,3273,323,10516,37590, 22872,1288,52828,199384,125466,8034,251361,795924, 417829,19994,734712,2454383,1348173,72589,2214440, 6602880,3229480,143081,4945844,15462250,7894324, 387000,11616040] |