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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 52 |
| 3 | 226 |
| 4 | 1041 |
| 5 | 5526 |
| 6 | 29439 |
| 7 | 150416 |
| 8 | 781647 |
| 9 | 4082439 |
| 10 | 21222937 |
| 11 | 110388099 |
| 12 | 574756967 |
| 13 | 2991427381 |
| 14 | 15568650875 |
| 15 | 81036181631 |
| 16 | 421794216427 |
| 17 | 2195417598827 |
| 18 | 11427201537107 |
| 19 | 59479013183583 |
| 20 | 309590293053773 |
| 21 | 1611431130841749 |
[2,52,226,1041,5526,29439,150416,781647,4082439, 21222937,110388099,574756967,2991427381, 15568650875,81036181631,421794216427, 2195417598827,11427201537107,59479013183583, 309590293053773,1611431130841749] |