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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 | 3 |
| 2 | 15 |
| 3 | 99 |
| 4 | 783 |
| 5 | 6987 |
| 6 | 67671 |
| 7 | 694035 |
| 8 | 7418943 |
| 9 | 81800091 |
| 10 | 923720679 |
| 11 | 10630297827 |
| 12 | 124224709455 |
| 13 | 1470172954347 |
| 14 | 17585028636279 |
| 15 | 212248303720371 |
| 16 | 2581823992868703 |
[1,3,15,99,783,6987,67671,694035,7418943,81800091, 923720679,10630297827,124224709455,1470172954347, 17585028636279,212248303720371,2581823992868703] |