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 | 0 |
| 3 | 0 |
| 4 | 3 |
| 5 | 3 |
| 6 | 11 |
| 7 | 11 |
| 8 | 23 |
| 9 | 33 |
| 10 | 63 |
| 11 | 63 |
| 12 | 137 |
| 13 | 137 |
| 14 | 257 |
| 15 | 320 |
| 16 | 535 |
| 17 | 535 |
| 18 | 1071 |
| 19 | 1071 |
| 20 | 2031 |
| 21 | 2281 |
| 22 | 4073 |
| 23 | 4073 |
| 24 | 7783 |
| 25 | 7908 |
| 26 | 14692 |
| 27 | 15455 |
| 28 | 29277 |
| 29 | 29277 |
| 30 | 58419 |
| 31 | 58419 |
| 32 | 107728 |
| 33 | 111272 |
| 34 | 214440 |
| 35 | 215444 |
| 36 | 429437 |
| 37 | 429437 |
| 38 | 842109 |
| 39 | 856061 |
| 40 | 1609547 |
[0,0,0,3,3,11,11,23,33,63,63,137,137,257,320,535, 535,1071,1071,2031,2281,4073,4073,7783,7908,14692, 15455,29277,29277,58419,58419,107728,111272, 214440,215444,429437,429437,842109,856061,1609547] |