The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 26 |
| 1 | 27 |
| 2 | 80 |
| 3 | 187 |
| 4 | 267 |
| 5 | 1255 |
| 6 | 7797 |
| 7 | 16849 |
| 8 | 108891 |
| 9 | 452413 |
| 10 | 561304 |
| 11 | 1575021 |
| 12 | 3711346 |
| 13 | 5286367 |
| 14 | 278602430 |
| 15 | 283888797 |
| 16 | 846380024 |
| 17 | 1976648845 |
| 18 | 2823028869 |
| 19 | 13268764321 |
| 20 | 82435614795 |
| 21 | 178139993911 |
[26,27,80,187,267,1255,7797,16849,108891,452413, 561304,1575021,3711346,5286367,278602430, 283888797,846380024,1976648845,2823028869, 13268764321,82435614795,178139993911] |