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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 11 |
| 5 | 47 |
| 6 | 292 |
| 7 | 2368 |
| 8 | 23427 |
| 9 | 272263 |
| 10 | 3628872 |
| 11 | 54525252 |
| 12 | 911484163 |
| 13 | 16775498551 |
| 14 | 337021458884 |
| 15 | 7338279413680 |
| 16 | 172130372061035 |
| 17 | 4327036966579151 |
| 18 | 116046966039565672 |
| 19 | 3307263639537314116 |
[0,1,2,4,11,47,292,2368,23427,272263,3628872, 54525252,911484163,16775498551,337021458884, 7338279413680,172130372061035,4327036966579151, 116046966039565672,3307263639537314116] |