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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 17 |
| 3 | 95 |
| 4 | 537 |
| 5 | 3059 |
| 6 | 17513 |
| 7 | 100607 |
| 8 | 579377 |
| 9 | 3342627 |
| 10 | 19311873 |
| 11 | 111696991 |
| 12 | 646614345 |
| 13 | 3745984787 |
| 14 | 21714513369 |
| 15 | 125937787135 |
| 16 | 730719993441 |
| 17 | 4241392619843 |
| 18 | 24626744856305 |
| 19 | 143030575690079 |
| 20 | 830920303820921 |
| 21 | 4828209352231731 |
| 22 | 28060704773688393 |
| 23 | 163112737069681663 |
[1,3,17,95,537,3059,17513,100607,579377,3342627, 19311873,111696991,646614345,3745984787, 21714513369,125937787135,730719993441, 4241392619843,24626744856305,143030575690079, 830920303820921,4828209352231731, 28060704773688393,163112737069681663] |