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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 | 2 |
| 3 | 4 |
| 4 | 13 |
| 5 | 36 |
| 6 | 105 |
| 7 | 330 |
| 8 | 1078 |
| 9 | 3638 |
| 10 | 11933 |
| 11 | 41912 |
| 12 | 145901 |
| 13 | 516793 |
| 14 | 1826389 |
| 15 | 6645738 |
| 16 | 24228599 |
| 17 | 88225915 |
| 18 | 325337560 |
| 19 | 1210496127 |
| 20 | 4526332777 |
| 21 | 16879854659 |
| 22 | 63732233744 |
| 23 | 241458420405 |
| 24 | 916751073403 |
| 25 | 3485171083519 |
| 26 | 13353360631538 |
| 27 | 51292140290724 |
| 28 | 197028744629141 |
| 29 | 759800587109092 |
| 30 | 2942586000346068 |
[1,1,2,4,13,36,105,330,1078,3638,11933,41912, 145901,516793,1826389,6645738,24228599,88225915, 325337560,1210496127,4526332777,16879854659, 63732233744,241458420405,916751073403, 3485171083519,13353360631538,51292140290724, 197028744629141,759800587109092,2942586000346068] |