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 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 1 |
| 8 | 2 |
| 9 | 2 |
| 10 | 3 |
| 11 | 3 |
| 12 | 4 |
| 13 | 4 |
| 14 | 5 |
| 15 | 6 |
| 16 | 7 |
| 17 | 8 |
| 18 | 10 |
| 19 | 12 |
| 20 | 14 |
| 21 | 17 |
| 22 | 20 |
| 23 | 24 |
| 24 | 28 |
| 25 | 33 |
| 26 | 38 |
| 27 | 45 |
| 28 | 52 |
| 29 | 60 |
| 30 | 69 |
| 31 | 80 |
| 32 | 91 |
| 33 | 105 |
| 34 | 120 |
| 35 | 137 |
| 36 | 156 |
| 37 | 178 |
| 38 | 202 |
| 39 | 230 |
| 40 | 261 |
| 41 | 295 |
| 42 | 334 |
| 43 | 378 |
| 44 | 426 |
| 45 | 481 |
| 46 | 542 |
| 47 | 609 |
| 48 | 685 |
| 49 | 769 |
| 50 | 862 |
| 51 | 966 |
| 52 | 1082 |
| 53 | 1209 |
| 54 | 1351 |
| 55 | 1508 |
| 56 | 1681 |
| 57 | 1873 |
| 58 | 2086 |
| 59 | 2319 |
| 60 | 2578 |
[0,1,0,0,0,0,1,1,2,2,3,3,4,4,5,6,7,8,10,12,14,17, 20,24,28,33,38,45,52,60,69,80,91,105,120,137,156, 178,202,230,261,295,334,378,426,481,542,609,685, 769,862,966,1082,1209,1351,1508,1681,1873,2086, 2319,2578] |