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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 9 |
| 5 | 31 |
| 6 | 113 |
| 7 | 431 |
| 8 | 1697 |
| 9 | 6849 |
| 10 | 28181 |
| 11 | 117787 |
| 12 | 498705 |
| 13 | 2134499 |
| 14 | 9220393 |
| 15 | 40146495 |
| 16 | 176011777 |
| 17 | 776363417 |
| 18 | 3442818809 |
| 19 | 15340344035 |
| 20 | 68645684937 |
| 21 | 308365373183 |
| 22 | 1390064360561 |
| 23 | 6286153799119 |
| 24 | 28510001658689 |
[1,1,3,9,31,113,431,1697,6849,28181,117787,498705, 2134499,9220393,40146495,176011777,776363417, 3442818809,15340344035,68645684937,308365373183, 1390064360561,6286153799119,28510001658689] |