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 | 11 |
| 3 | 57 |
| 4 | 292 |
| 5 | 1495 |
| 6 | 7653 |
| 7 | 39176 |
| 8 | 200543 |
| 9 | 1026585 |
| 10 | 5255116 |
| 11 | 26901079 |
| 12 | 137707341 |
| 13 | 704927552 |
| 14 | 3608542943 |
| 15 | 18472227585 |
| 16 | 94559825764 |
| 17 | 484054270519 |
| 18 | 2477886723189 |
| 19 | 12684368234936 |
| 20 | 64931619356831 |
| 21 | 332386691572713 |
[0,2,11,57,292,1495,7653,39176,200543,1026585, 5255116,26901079,137707341,704927552,3608542943, 18472227585,94559825764,484054270519, 2477886723189,12684368234936,64931619356831, 332386691572713] |