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 | 3 |
| 4 | 4 |
| 5 | 1 |
| 6 | 10 |
| 7 | 15 |
| 8 | 6 |
| 9 | 1 |
| 10 | 35 |
| 11 | 56 |
| 12 | 28 |
| 13 | 8 |
| 14 | 1 |
| 15 | 126 |
| 16 | 210 |
| 17 | 120 |
| 18 | 45 |
| 19 | 10 |
| 20 | 1 |
| 21 | 462 |
| 22 | 792 |
| 23 | 495 |
| 24 | 220 |
| 25 | 66 |
| 26 | 12 |
| 27 | 1 |
| 28 | 1716 |
| 29 | 3003 |
| 30 | 2002 |
| 31 | 1001 |
| 32 | 364 |
| 33 | 91 |
| 34 | 14 |
| 35 | 1 |
| 36 | 6435 |
| 37 | 11440 |
| 38 | 8008 |
| 39 | 4368 |
| 40 | 1820 |
| 41 | 560 |
| 42 | 120 |
| 43 | 16 |
| 44 | 1 |
| 45 | 24310 |
| 46 | 43758 |
| 47 | 31824 |
| 48 | 18564 |
| 49 | 8568 |
| 50 | 3060 |
| 51 | 816 |
| 52 | 153 |
| 53 | 18 |
| 54 | 1 |
[1,1,1,3,4,1,10,15,6,1,35,56,28,8,1,126,210,120, 45,10,1,462,792,495,220,66,12,1,1716,3003,2002, 1001,364,91,14,1,6435,11440,8008,4368,1820,560, 120,16,1,24310,43758,31824,18564,8568,3060,816, 153,18,1] |