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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 | 8 |
| 4 | 30 |
| 5 | 100 |
| 6 | 389 |
| 7 | 1449 |
| 8 | 5973 |
| 9 | 23504 |
| 10 | 99549 |
| 11 | 407127 |
| 12 | 1761889 |
| 13 | 7397553 |
| 14 | 32482799 |
| 15 | 139101540 |
| 16 | 617747515 |
| 17 | 2685316297 |
| 18 | 12031155473 |
| 19 | 52920320631 |
| 20 | 238795119056 |
| 21 | 1060415369631 |
| 22 | 4813022240373 |
| 23 | 21541195368144 |
| 24 | 98250547679684 |
| 25 | 442617082437236 |
| 26 | 2027201095045310 |
| 27 | 9183249044247950 |
| 28 | 42210032467922652 |
[1,1,3,8,30,100,389,1449,5973,23504,99549,407127, 1761889,7397553,32482799,139101540,617747515, 2685316297,12031155473,52920320631,238795119056, 1060415369631,4813022240373,21541195368144, 98250547679684,442617082437236,2027201095045310, 9183249044247950,42210032467922652] |