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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 3 |
| 3 | 15 |
| 4 | 3 |
| 5 | 7 |
| 6 | 43 |
| 7 | 255 |
| 8 | 131 |
| 9 | 775 |
| 10 | 683 |
| 11 | 4095 |
| 12 | 2307 |
| 13 | 12935 |
| 14 | 10027 |
| 15 | 51839 |
| 16 | 40067 |
| 17 | 211207 |
| 18 | 160427 |
| 19 | 845823 |
| 20 | 641283 |
| 21 | 3379847 |
| 22 | 2565931 |
| 23 | 13519487 |
| 24 | 10263683 |
| 25 | 54081799 |
| 26 | 41054891 |
| 27 | 216328191 |
| 28 | 164219139 |
| 29 | 865309319 |
| 30 | 656877355 |
| 31 | 3461237375 |
| 32 | 2627509379 |
| 33 | 13844953351 |
[1,3,3,15,3,7,43,255,131,775,683,4095,2307,12935, 10027,51839,40067,211207,160427,845823,641283, 3379847,2565931,13519487,10263683,54081799, 41054891,216328191,164219139,865309319,656877355, 3461237375,2627509379,13844953351] |