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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 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 30 |
| 6 | 66 |
| 7 | 147 |
| 8 | 327 |
| 9 | 726 |
| 10 | 1614 |
| 11 | 3588 |
| 12 | 7974 |
| 13 | 17725 |
| 14 | 39399 |
| 15 | 87573 |
| 16 | 194655 |
| 17 | 432669 |
| 18 | 961716 |
| 19 | 2137659 |
| 20 | 4751490 |
| 21 | 10561392 |
| 22 | 23475378 |
| 23 | 52179987 |
| 24 | 115983270 |
| 25 | 257802273 |
| 26 | 573031011 |
| 27 | 1273706934 |
| 28 | 2831137095 |
| 29 | 6292921101 |
| 30 | 13987615113 |
[1,1,3,6,13,30,66,147,327,726,1614,3588,7974, 17725,39399,87573,194655,432669,961716,2137659, 4751490,10561392,23475378,52179987,115983270, 257802273,573031011,1273706934,2831137095, 6292921101,13987615113] |