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 | 2 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 4 |
| 8 | 3 |
| 9 | 1 |
| 10 | 1 |
| 11 | 4 |
| 12 | 9 |
| 13 | 16 |
| 14 | 20 |
| 15 | 16 |
| 16 | 9 |
| 17 | 4 |
| 18 | 1 |
| 19 | 1 |
| 20 | 5 |
| 21 | 17 |
| 22 | 52 |
| 23 | 136 |
| 24 | 284 |
| 25 | 477 |
| 26 | 655 |
| 27 | 730 |
| 28 | 655 |
| 29 | 477 |
| 30 | 284 |
| 31 | 136 |
| 32 | 52 |
| 33 | 17 |
| 34 | 5 |
| 35 | 1 |
| 36 | 1 |
| 37 | 6 |
| 38 | 28 |
| 39 | 134 |
| 40 | 625 |
| 41 | 2674 |
| 42 | 10195 |
| 43 | 34230 |
| 44 | 100577 |
| 45 | 258092 |
| 46 | 579208 |
| 47 | 1140090 |
| 48 | 1974438 |
| 49 | 3016994 |
| 50 | 4077077 |
| 51 | 4881092 |
| 52 | 5182326 |
| 53 | 4881092 |
[1,1,1,2,1,1,3,4,3,1,1,4,9,16,20,16,9,4,1,1,5,17, 52,136,284,477,655,730,655,477,284,136,52,17,5,1, 1,6,28,134,625,2674,10195,34230,100577,258092, 579208,1140090,1974438,3016994,4077077,4881092, 5182326,4881092] |