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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 | 7 |
| 3 | 25 |
| 4 | 101 |
| 5 | 397 |
| 6 | 1583 |
| 7 | 6337 |
| 8 | 25513 |
| 9 | 103161 |
| 10 | 418727 |
| 11 | 1705129 |
| 12 | 6963165 |
| 13 | 28504981 |
| 14 | 116941727 |
| 15 | 480667137 |
| 16 | 1979039633 |
| 17 | 8160609457 |
| 18 | 33696358983 |
| 19 | 139308985465 |
| 20 | 576583448021 |
| 21 | 2388853677981 |
| 22 | 9906585874127 |
| 23 | 41118073118785 |
| 24 | 170799570803001 |
| 25 | 710003165365417 |
[1,1,7,25,101,397,1583,6337,25513,103161,418727, 1705129,6963165,28504981,116941727,480667137, 1979039633,8160609457,33696358983,139308985465, 576583448021,2388853677981,9906585874127, 41118073118785,170799570803001,710003165365417] |