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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 4 |
| 2 | 5 |
| 3 | 26 |
| 4 | 68 |
| 5 | 89 |
| 6 | 466 |
| 7 | 1220 |
| 8 | 1597 |
| 9 | 8362 |
| 10 | 21892 |
| 11 | 28657 |
| 12 | 150050 |
| 13 | 392836 |
| 14 | 514229 |
| 15 | 2692538 |
| 16 | 7049156 |
| 17 | 9227465 |
| 18 | 48315634 |
| 19 | 126491972 |
| 20 | 165580141 |
| 21 | 866988874 |
| 22 | 2269806340 |
| 23 | 2971215073 |
| 24 | 15557484098 |
| 25 | 40730022148 |
| 26 | 53316291173 |
| 27 | 279167724890 |
[2,4,5,26,68,89,466,1220,1597,8362,21892,28657, 150050,392836,514229,2692538,7049156,9227465, 48315634,126491972,165580141,866988874,2269806340, 2971215073,15557484098,40730022148,53316291173, 279167724890] |