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 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 1 |
| 12 | 0 |
| 13 | 1 |
| 14 | 1 |
| 15 | 3 |
| 16 | 1 |
| 17 | 1 |
| 18 | 3 |
| 19 | 4 |
| 20 | 1 |
| 21 | 3 |
| 22 | 4 |
| 23 | 7 |
| 24 | 3 |
| 25 | 4 |
| 26 | 8 |
| 27 | 10 |
| 28 | 4 |
| 29 | 8 |
| 30 | 11 |
| 31 | 15 |
| 32 | 8 |
| 33 | 11 |
| 34 | 18 |
| 35 | 21 |
| 36 | 11 |
| 37 | 19 |
| 38 | 24 |
| 39 | 30 |
| 40 | 19 |
| 41 | 25 |
| 42 | 37 |
| 43 | 42 |
| 44 | 25 |
| 45 | 40 |
| 46 | 50 |
| 47 | 56 |
| 48 | 41 |
| 49 | 53 |
| 50 | 70 |
| 51 | 79 |
| 52 | 54 |
| 53 | 77 |
| 54 | 95 |
| 55 | 103 |
| 56 | 80 |
| 57 | 103 |
| 58 | 129 |
| 59 | 141 |
| 60 | 106 |
| 61 | 144 |
| 62 | 172 |
| 63 | 183 |
| 64 | 151 |
| 65 | 189 |
| 66 | 228 |
| 67 | 246 |
| 68 | 197 |
| 69 | 257 |
| 70 | 301 |
| 71 | 314 |
[0,0,0,0,0,0,1,0,0,1,1,0,1,1,3,1,1,3,4,1,3,4,7,3, 4,8,10,4,8,11,15,8,11,18,21,11,19,24,30,19,25,37, 42,25,40,50,56,41,53,70,79,54,77,95,103,80,103, 129,141,106,144,172,183,151,189,228,246,197,257, 301,314] |