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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 | 2 |
| 2 | 7 |
| 3 | 23 |
| 4 | 94 |
| 5 | 370 |
| 6 | 1604 |
| 7 | 6727 |
| 8 | 30370 |
| 9 | 133713 |
| 10 | 615882 |
| 11 | 2777178 |
| 12 | 13009742 |
| 13 | 59927580 |
| 14 | 283460002 |
| 15 | 1321621492 |
| 16 | 6307233267 |
| 17 | 29747482950 |
| 18 | 142758158057 |
| 19 | 678127146675 |
| 20 | 3271810279782 |
| 21 | 15650954143844 |
| 22 | 75782175561207 |
| 23 | 364187983535248 |
| 24 | 1769609725577321 |
| 25 | 8543602251222249 |
| 26 | 41615832882726956 |
| 27 | 201560940547506289 |
[1,2,7,23,94,370,1604,6727,30370,133713,615882, 2777178,13009742,59927580,283460002,1321621492, 6307233267,29747482950,142758158057,678127146675, 3271810279782,15650954143844,75782175561207, 364187983535248,1769609725577321,8543602251222249, 41615832882726956,201560940547506289] |