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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 | 6 |
| 4 | 14 |
| 5 | 44 |
| 6 | 132 |
| 7 | 401 |
| 8 | 1327 |
| 9 | 4231 |
| 10 | 14123 |
| 11 | 47537 |
| 12 | 160013 |
| 13 | 551377 |
| 14 | 1895851 |
| 15 | 6587958 |
| 16 | 23061992 |
| 17 | 80886997 |
| 18 | 285961506 |
| 19 | 1013609292 |
| 20 | 3607287249 |
| 21 | 12892376175 |
| 22 | 46181318719 |
| 23 | 166012613410 |
| 24 | 598252219576 |
| 25 | 2160943489509 |
| 26 | 7825226695478 |
| 27 | 28390138542713 |
| 28 | 103212631759477 |
| 29 | 375912446455116 |
| 30 | 1371356707626747 |
[1,1,2,6,14,44,132,401,1327,4231,14123,47537, 160013,551377,1895851,6587958,23061992,80886997, 285961506,1013609292,3607287249,12892376175, 46181318719,166012613410,598252219576, 2160943489509,7825226695478,28390138542713, 103212631759477,375912446455116,1371356707626747] |