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 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 2 |
| 7 | 6 |
| 8 | 5 |
| 9 | 9 |
| 10 | 9 |
| 11 | 17 |
| 12 | 13 |
| 13 | 26 |
| 14 | 26 |
| 15 | 39 |
| 16 | 39 |
| 17 | 66 |
| 18 | 61 |
| 19 | 104 |
| 20 | 102 |
| 21 | 156 |
| 22 | 162 |
| 23 | 265 |
| 24 | 249 |
| 25 | 405 |
| 26 | 419 |
| 27 | 646 |
| 28 | 652 |
| 29 | 1059 |
| 30 | 1031 |
| 31 | 1676 |
| 32 | 1696 |
| 33 | 2660 |
| 34 | 2705 |
| 35 | 4362 |
| 36 | 4283 |
| 37 | 6937 |
| 38 | 7039 |
| 39 | 11159 |
| 40 | 11206 |
| 41 | 18138 |
| 42 | 17998 |
| 43 | 29130 |
| 44 | 29325 |
| 45 | 46805 |
| 46 | 47075 |
| 47 | 76171 |
| 48 | 75713 |
| 49 | 122502 |
| 50 | 123123 |
[0,0,1,1,3,2,6,5,9,9,17,13,26,26,39,39,66,61,104, 102,156,162,265,249,405,419,646,652,1059,1031, 1676,1696,2660,2705,4362,4283,6937,7039,11159, 11206,18138,17998,29130,29325,46805,47075,76171, 75713,122502,123123] |