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 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 2 |
| 14 | 2 |
| 15 | 4 |
| 16 | 5 |
| 17 | 7 |
| 18 | 10 |
| 19 | 15 |
| 20 | 20 |
| 21 | 28 |
| 22 | 38 |
| 23 | 53 |
| 24 | 71 |
| 25 | 99 |
| 26 | 133 |
| 27 | 182 |
| 28 | 244 |
| 29 | 331 |
| 30 | 443 |
| 31 | 600 |
| 32 | 797 |
| 33 | 1072 |
| 34 | 1427 |
| 35 | 1910 |
| 36 | 2532 |
| 37 | 3379 |
| 38 | 4472 |
| 39 | 5947 |
| 40 | 7862 |
| 41 | 10421 |
| 42 | 13755 |
| 43 | 18201 |
| 44 | 23984 |
| 45 | 31671 |
| 46 | 41701 |
| 47 | 54973 |
| 48 | 72303 |
| 49 | 95204 |
| 50 | 125119 |
| 51 | 164575 |
[0,0,0,0,0,0,0,0,0,1,1,1,2,2,4,5,7,10,15,20,28,38, 53,71,99,133,182,244,331,443,600,797,1072,1427, 1910,2532,3379,4472,5947,7862,10421,13755,18201, 23984,31671,41701,54973,72303,95204,125119,164575] |