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) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 1 |
| 9 | 3 |
| 10 | 5 |
| 11 | 8 |
| 12 | 11 |
| 13 | 19 |
| 14 | 26 |
| 15 | 34 |
| 16 | 51 |
| 17 | 67 |
| 18 | 91 |
| 19 | 118 |
| 20 | 158 |
| 21 | 200 |
| 22 | 271 |
| 23 | 331 |
| 24 | 433 |
| 25 | 538 |
| 26 | 699 |
| 27 | 849 |
| 28 | 1089 |
| 29 | 1323 |
| 30 | 1674 |
| 31 | 2030 |
| 32 | 2542 |
| 33 | 3066 |
| 34 | 3813 |
| 35 | 4567 |
| 36 | 5640 |
| 37 | 6760 |
| 38 | 8272 |
| 39 | 9871 |
| 40 | 12002 |
| 41 | 14290 |
| 42 | 17287 |
| 43 | 20515 |
| 44 | 24675 |
| 45 | 29214 |
| 46 | 34981 |
| 47 | 41282 |
| 48 | 49216 |
| 49 | 57957 |
| 50 | 68798 |
[0,0,0,0,0,0,1,1,3,5,8,11,19,26,34,51,67,91,118, 158,200,271,331,433,538,699,849,1089,1323,1674, 2030,2542,3066,3813,4567,5640,6760,8272,9871, 12002,14290,17287,20515,24675,29214,34981,41282, 49216,57957,68798] |