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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 13 |
| 4 | 36 |
| 5 | 122 |
| 6 | 433 |
| 7 | 1356 |
| 8 | 4449 |
| 9 | 15279 |
| 10 | 48567 |
| 11 | 158837 |
| 12 | 532415 |
| 13 | 1704777 |
| 14 | 5547148 |
| 15 | 18335536 |
| 16 | 58815602 |
| 17 | 190574866 |
| 18 | 623885902 |
| 19 | 2000945191 |
| 20 | 6459510350 |
| 21 | 20998728429 |
| 22 | 67275468661 |
| 23 | 216477522426 |
| 24 | 699952967976 |
| 25 | 2239210854373 |
| 26 | 7184690267832 |
| 27 | 23131348476391 |
[1,1,3,13,36,122,433,1356,4449,15279,48567,158837, 532415,1704777,5547148,18335536,58815602, 190574866,623885902,2000945191,6459510350, 20998728429,67275468661,216477522426,699952967976, 2239210854373,7184690267832,23131348476391] |