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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 0 |
| 7 | 0 |
| 8 | 2 |
| 9 | 5 |
| 10 | 3 |
| 11 | 0 |
| 12 | 5 |
| 13 | 21 |
| 14 | 28 |
| 15 | 12 |
| 16 | 14 |
| 17 | 84 |
| 18 | 180 |
| 19 | 165 |
| 20 | 97 |
| 21 | 330 |
| 22 | 990 |
| 23 | 1430 |
| 24 | 1133 |
| 25 | 1560 |
| 26 | 5005 |
| 27 | 10010 |
| 28 | 11349 |
| 29 | 11193 |
| 30 | 25452 |
| 31 | 61880 |
| 32 | 94250 |
| 33 | 100844 |
| 34 | 150144 |
| 35 | 360468 |
| 36 | 683162 |
| 37 | 889542 |
| 38 | 1100784 |
| 39 | 2144397 |
| 40 | 4536839 |
| 41 | 7158326 |
| 42 | 9102786 |
| 43 | 14132580 |
| 44 | 29078645 |
[1,0,0,0,1,1,0,0,2,5,3,0,5,21,28,12,14,84,180,165, 97,330,990,1430,1133,1560,5005,10010,11349,11193, 25452,61880,94250,100844,150144,360468,683162, 889542,1100784,2144397,4536839,7158326,9102786, 14132580,29078645] |