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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 15 |
| 4 | 127 |
| 5 | 1895 |
| 6 | 53071 |
| 7 | 2953575 |
| 8 | 337064047 |
| 9 | 79446381319 |
| 10 | 38491200186831 |
| 11 | 38046637826801703 |
| 12 | 76226441027901385519 |
| 13 | 308075833912652114006087 |
| 14 | 2503633988838391023366024079 |
| 15 | 40826169678526460459483237927271 |
| 16 | 1334110729147927667553970495057395439 |
[1,1,3,15,127,1895,53071,2953575,337064047, 79446381319,38491200186831,38046637826801703, 76226441027901385519,308075833912652114006087, 2503633988838391023366024079, 40826169678526460459483237927271, 1334110729147927667553970495057395439] |