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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 3 |
| 3 | 15 |
| 4 | 3 |
| 5 | 7 |
| 6 | 11 |
| 7 | 31 |
| 8 | 35 |
| 9 | 39 |
| 10 | 235 |
| 11 | 895 |
| 12 | 3843 |
| 13 | 12551 |
| 14 | 523 |
| 15 | 31 |
| 16 | 35 |
| 17 | 39 |
| 18 | 235 |
| 19 | 895 |
| 20 | 771 |
| 21 | 3335 |
| 22 | 7691 |
| 23 | 8223 |
| 24 | 24611 |
| 25 | 40999 |
| 26 | 82155 |
| 27 | 181119 |
| 28 | 295683 |
| 29 | 855303 |
| 30 | 1981963 |
| 31 | 2375711 |
| 32 | 6848547 |
| 33 | 15794215 |
| 34 | 19005675 |
| 35 | 54788991 |
| 36 | 125829891 |
| 37 | 134221063 |
| 38 | 402660875 |
| 39 | 939532319 |
[1,3,3,15,3,7,11,31,35,39,235,895,3843,12551,523, 31,35,39,235,895,771,3335,7691,8223,24611,40999, 82155,181119,295683,855303,1981963,2375711, 6848547,15794215,19005675,54788991,125829891, 134221063,402660875,939532319] |