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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 | 16 |
| 5 | 38 |
| 6 | 100 |
| 7 | 254 |
| 8 | 674 |
| 9 | 1772 |
| 10 | 4760 |
| 11 | 12783 |
| 12 | 34745 |
| 13 | 94692 |
| 14 | 260040 |
| 15 | 716546 |
| 16 | 1984984 |
| 17 | 5517179 |
| 18 | 15396331 |
| 19 | 43094834 |
| 20 | 121008580 |
| 21 | 340686763 |
| 22 | 961686971 |
| 23 | 2720893669 |
| 24 | 7715273753 |
| 25 | 21921047638 |
| 26 | 62401862460 |
| 27 | 177948692666 |
| 28 | 508289340032 |
| 29 | 1454107965549 |
[1,1,3,6,16,38,100,254,674,1772,4760,12783,34745, 94692,260040,716546,1984984,5517179,15396331, 43094834,121008580,340686763,961686971,2720893669, 7715273753,21921047638,62401862460,177948692666, 508289340032,1454107965549] |