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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 14 |
| 6 | 32 |
| 7 | 107 |
| 8 | 724 |
| 9 | 18616 |
| 10 | 4117597 |
| 11 | 28878084584 |
| 12 | 53183366452504936 |
| 13 | 794001316484619940422835765 |
| 14 | 25210343943654420841949267608211227900299990 |
| 15 | 14311021641196256564899251685012421154803682074917148917844556724305980 |
[1,2,4,7,14,32,107,724,18616,4117597,28878084584, 53183366452504936,794001316484619940422835765, 25210343943654420841949267608211227900299990, 14311021641196256564899251685012421154803682074917\ 148917844556724305980] |