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 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 2 |
| 9 | 5 |
| 10 | 7 |
| 11 | 10 |
| 12 | 14 |
| 13 | 21 |
| 14 | 28 |
| 15 | 36 |
| 16 | 51 |
| 17 | 64 |
| 18 | 84 |
| 19 | 106 |
| 20 | 132 |
| 21 | 165 |
| 22 | 202 |
| 23 | 252 |
| 24 | 311 |
| 25 | 391 |
| 26 | 473 |
| 27 | 579 |
| 28 | 713 |
| 29 | 868 |
| 30 | 1069 |
| 31 | 1303 |
| 32 | 1617 |
| 33 | 1954 |
| 34 | 2404 |
| 35 | 2908 |
| 36 | 3556 |
| 37 | 4282 |
| 38 | 5200 |
| 39 | 6207 |
| 40 | 7505 |
| 41 | 8934 |
| 42 | 10700 |
| 43 | 12717 |
| 44 | 15165 |
| 45 | 17863 |
| 46 | 21222 |
| 47 | 24976 |
| 48 | 29443 |
| 49 | 34523 |
| 50 | 40582 |
| 51 | 47415 |
[1,1,0,0,1,0,0,1,2,5,7,10,14,21,28,36,51,64,84, 106,132,165,202,252,311,391,473,579,713,868,1069, 1303,1617,1954,2404,2908,3556,4282,5200,6207,7505, 8934,10700,12717,15165,17863,21222,24976,29443, 34523,40582,47415] |