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) |
|---|---|
| 1 | 16 |
| 2 | 116 |
| 3 | 380 |
| 4 | 1888 |
| 5 | 7458 |
| 6 | 31980 |
| 7 | 127566 |
| 8 | 520568 |
| 9 | 2080650 |
| 10 | 8370976 |
| 11 | 33475854 |
| 12 | 134136344 |
| 13 | 536498498 |
| 14 | 2147099168 |
| 15 | 8588150878 |
| 16 | 34357874584 |
| 17 | 137430314336 |
| 18 | 549746688148 |
| 19 | 2198981195384 |
| 20 | 8796047678504 |
| 21 | 35184165954884 |
| 22 | 140737260054372 |
[16,116,380,1888,7458,31980,127566,520568,2080650, 8370976,33475854,134136344,536498498,2147099168, 8588150878,34357874584,137430314336,549746688148, 2198981195384,8796047678504,35184165954884, 140737260054372] |