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 | 1 |
| 3 | 1 |
| 4 | 10 |
| 5 | 1 |
| 6 | 1 |
| 7 | 27 |
| 8 | 27 |
| 9 | 1 |
| 10 | 1 |
| 11 | 68 |
| 12 | 102 |
| 13 | 68 |
| 14 | 1 |
| 15 | 1 |
| 16 | 165 |
| 17 | 330 |
| 18 | 330 |
| 19 | 165 |
| 20 | 1 |
| 21 | 1 |
| 22 | 390 |
| 23 | 975 |
| 24 | 1300 |
| 25 | 975 |
| 26 | 390 |
| 27 | 1 |
| 28 | 1 |
| 29 | 903 |
| 30 | 2709 |
| 31 | 4515 |
| 32 | 4515 |
| 33 | 2709 |
| 34 | 903 |
| 35 | 1 |
| 36 | 1 |
| 37 | 2056 |
| 38 | 7196 |
| 39 | 14392 |
| 40 | 17990 |
| 41 | 14392 |
| 42 | 7196 |
| 43 | 2056 |
| 44 | 1 |
| 45 | 1 |
| 46 | 4617 |
| 47 | 18468 |
| 48 | 43092 |
| 49 | 64638 |
| 50 | 64638 |
| 51 | 43092 |
| 52 | 18468 |
| 53 | 4617 |
| 54 | 1 |
| 55 | 1 |
[1,1,1,1,10,1,1,27,27,1,1,68,102,68,1,1,165,330, 330,165,1,1,390,975,1300,975,390,1,1,903,2709, 4515,4515,2709,903,1,1,2056,7196,14392,17990, 14392,7196,2056,1,1,4617,18468,43092,64638,64638, 43092,18468,4617,1,1] |