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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 3 |
| 10 | 5 |
| 11 | 11 |
| 12 | 17 |
| 13 | 29 |
| 14 | 49 |
| 15 | 193 |
| 16 | 509 |
| 17 | 1945 |
| 18 | 5173 |
| 19 | 19089 |
| 20 | 57135 |
| 21 | 304805 |
| 22 | 1236463 |
| 23 | 7710953 |
| 24 | 34938029 |
| 25 | 239632727 |
| 26 | 1249524805 |
| 27 | 10579289505 |
| 28 | 68493745825 |
[1,1,1,1,1,1,1,1,3,5,11,17,29,49,193,509,1945, 5173,19089,57135,304805,1236463,7710953,34938029, 239632727,1249524805,10579289505,68493745825] |