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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 5 |
| 6 | 12 |
| 7 | 7 |
| 8 | 32 |
| 9 | 10 |
| 10 | 90 |
| 11 | 11 |
| 12 | 264 |
| 13 | 13 |
| 14 | 686 |
| 15 | 105 |
| 16 | 1809 |
| 17 | 17 |
| 18 | 5166 |
| 19 | 19 |
| 20 | 11560 |
| 21 | 2856 |
| 22 | 28182 |
| 23 | 23 |
| 24 | 81456 |
| 25 | 26 |
| 26 | 159770 |
| 27 | 61263 |
| 28 | 375004 |
| 29 | 29 |
| 30 | 1122660 |
| 31 | 31 |
| 32 | 1984032 |
| 33 | 1082598 |
| 34 | 4456482 |
| 35 | 560 |
| 36 | 14486329 |
| 37 | 37 |
| 38 | 22413350 |
| 39 | 16888053 |
| 40 | 50674560 |
| 41 | 41 |
| 42 | 174582072 |
| 43 | 43 |
| 44 | 247627820 |
| 45 | 241884450 |
[1,2,3,5,5,12,7,32,10,90,11,264,13,686,105,1809, 17,5166,19,11560,2856,28182,23,81456,26,159770, 61263,375004,29,1122660,31,1984032,1082598, 4456482,560,14486329,37,22413350,16888053, 50674560,41,174582072,43,247627820,241884450] |