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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 43 |
| 3 | 495 |
| 4 | 7281 |
| 5 | 133173 |
| 6 | 2945755 |
| 7 | 76769759 |
| 8 | 2306295265 |
| 9 | 78492222693 |
| 10 | 2985018589323 |
| 11 | 125449316558415 |
| 12 | 5773653823774929 |
| 13 | 288808141870191765 |
| 14 | 15601413322486382523 |
| 15 | 905170780889312826303 |
| 16 | 56136189828704013001665 |
[1,5,43,495,7281,133173,2945755,76769759, 2306295265,78492222693,2985018589323, 125449316558415,5773653823774929, 288808141870191765,15601413322486382523, 905170780889312826303,56136189828704013001665] |