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 | 0 |
| 8 | 1 |
| 9 | 0 |
| 10 | 0 |
| 11 | 1 |
| 12 | 0 |
| 13 | 1 |
| 14 | 1 |
| 15 | 2 |
| 16 | 1 |
| 17 | 1 |
| 18 | 3 |
| 19 | 1 |
| 20 | 3 |
| 21 | 3 |
| 22 | 4 |
| 23 | 4 |
| 24 | 3 |
| 25 | 7 |
| 26 | 4 |
| 27 | 7 |
| 28 | 8 |
| 29 | 8 |
| 30 | 10 |
| 31 | 8 |
| 32 | 14 |
| 33 | 11 |
| 34 | 14 |
| 35 | 18 |
| 36 | 16 |
| 37 | 20 |
| 38 | 19 |
| 39 | 27 |
| 40 | 24 |
| 41 | 28 |
| 42 | 35 |
| 43 | 31 |
| 44 | 40 |
| 45 | 40 |
| 46 | 48 |
| 47 | 48 |
| 48 | 53 |
| 49 | 64 |
| 50 | 60 |
| 51 | 73 |
| 52 | 74 |
| 53 | 86 |
| 54 | 90 |
| 55 | 96 |
| 56 | 114 |
| 57 | 108 |
| 58 | 129 |
| 59 | 135 |
| 60 | 149 |
| 61 | 159 |
| 62 | 167 |
| 63 | 196 |
| 64 | 190 |
| 65 | 221 |
| 66 | 234 |
| 67 | 249 |
| 68 | 274 |
| 69 | 285 |
| 70 | 326 |
| 71 | 324 |
| 72 | 367 |
[0,0,0,0,0,0,0,1,0,0,1,0,1,1,2,1,1,3,1,3,3,4,4,3, 7,4,7,8,8,10,8,14,11,14,18,16,20,19,27,24,28,35, 31,40,40,48,48,53,64,60,73,74,86,90,96,114,108, 129,135,149,159,167,196,190,221,234,249,274,285, 326,324,367] |