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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 62 |
| 3 | 23 |
| 4 | 6698 |
| 5 | 134 |
| 6 | 819260 |
| 7 | 2877 |
| 8 | 108621208 |
| 9 | 37201 |
| 10 | 14479700369 |
| 11 | 468915 |
| 12 | 1937642567197 |
| 13 | 7263798 |
| 14 | 259423798200631 |
| 15 | 97188666 |
| 16 | 34741718606996667 |
| 17 | 1352782707 |
| 18 | 4652799885800847654 |
| 19 | 19220635744 |
| 20 | 623139536802731306776 |
| 21 | 265095839585 |
| 22 | 83456125991723439283189 |
[1,3,62,23,6698,134,819260,2877,108621208,37201, 14479700369,468915,1937642567197,7263798, 259423798200631,97188666,34741718606996667, 1352782707,4652799885800847654,19220635744, 623139536802731306776,265095839585, 83456125991723439283189] |