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 | 0 |
| 1 | 2 |
| 2 | 14 |
| 3 | 74 |
| 4 | 352 |
| 5 | 1588 |
| 6 | 6946 |
| 7 | 29786 |
| 8 | 126008 |
| 9 | 527900 |
| 10 | 2195580 |
| 11 | 9080772 |
| 12 | 37392864 |
| 13 | 153434536 |
| 14 | 627778954 |
| 15 | 2562441466 |
| 16 | 10438340104 |
| 17 | 42449348236 |
| 18 | 172376641924 |
| 19 | 699100282156 |
| 20 | 2832205421824 |
| 21 | 11462854280536 |
| 22 | 46354571222164 |
[0,2,14,74,352,1588,6946,29786,126008,527900, 2195580,9080772,37392864,153434536,627778954, 2562441466,10438340104,42449348236,172376641924, 699100282156,2832205421824,11462854280536, 46354571222164] |