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 | 0 |
| 2 | 6 |
| 3 | 78 |
| 4 | 464 |
| 5 | 3090 |
| 6 | 22460 |
| 7 | 162766 |
| 8 | 1169472 |
| 9 | 8396770 |
| 10 | 60331460 |
| 11 | 433549110 |
| 12 | 3115381720 |
| 13 | 22385974490 |
| 14 | 160857679996 |
| 15 | 1155868628526 |
| 16 | 8305679220784 |
| 17 | 59681777605042 |
| 18 | 428852885779252 |
| 19 | 3081590524869798 |
| 20 | 22143258241832392 |
[0,6,78,464,3090,22460,162766,1169472,8396770, 60331460,433549110,3115381720,22385974490, 160857679996,1155868628526,8305679220784, 59681777605042,428852885779252,3081590524869798, 22143258241832392] |