The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 8 |
| 3 | 34 |
| 4 | 156 |
| 5 | 718 |
| 6 | 3422 |
| 7 | 16334 |
| 8 | 79118 |
| 9 | 384020 |
| 10 | 1878350 |
| 11 | 9201068 |
| 12 | 45268796 |
| 13 | 223004070 |
| 14 | 1101463614 |
| 15 | 5445866142 |
| 16 | 26971500686 |
| 17 | 133688792364 |
| 18 | 663414638696 |
| 19 | 3294250138924 |
| 20 | 16371243474378 |
| 21 | 81401390498830 |
| 22 | 404986420868284 |
| 23 | 2015720354009970 |
| 24 | 10037249760011008 |
| 25 | 49997200939602922 |
| 26 | 249130467399797802 |
[1,2,8,34,156,718,3422,16334,79118,384020,1878350, 9201068,45268796,223004070,1101463614,5445866142, 26971500686,133688792364,663414638696, 3294250138924,16371243474378,81401390498830, 404986420868284,2015720354009970, 10037249760011008,49997200939602922, 249130467399797802] |