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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 1 |
| 4 | 15 |
| 5 | 4 |
| 6 | 1 |
| 7 | 105 |
| 8 | 31 |
| 9 | 7 |
| 10 | 1 |
| 11 | 945 |
| 12 | 293 |
| 13 | 68 |
| 14 | 11 |
| 15 | 1 |
| 16 | 10395 |
| 17 | 3326 |
| 18 | 837 |
| 19 | 159 |
| 20 | 18 |
| 21 | 1 |
| 22 | 135135 |
| 23 | 44189 |
| 24 | 11863 |
| 25 | 2488 |
| 26 | 381 |
| 27 | 29 |
| 28 | 1 |
| 29 | 2027025 |
| 30 | 673471 |
| 31 | 189503 |
| 32 | 43169 |
| 33 | 7601 |
| 34 | 879 |
| 35 | 47 |
| 36 | 1 |
| 37 | 34459425 |
| 38 | 11588884 |
| 39 | 3377341 |
| 40 | 822113 |
| 41 | 160784 |
| 42 | 23559 |
| 43 | 2049 |
| 44 | 76 |
| 45 | 1 |
| 46 | 654729075 |
| 47 | 222304897 |
| 48 | 66564396 |
| 49 | 17066007 |
| 50 | 3621067 |
| 51 | 607897 |
| 52 | 72989 |
| 53 | 4788 |
| 54 | 123 |
| 55 | 1 |
[1,3,1,15,4,1,105,31,7,1,945,293,68,11,1,10395, 3326,837,159,18,1,135135,44189,11863,2488,381,29, 1,2027025,673471,189503,43169,7601,879,47,1, 34459425,11588884,3377341,822113,160784,23559, 2049,76,1,654729075,222304897,66564396,17066007, 3621067,607897,72989,4788,123,1] |