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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 6 |
| 8 | 7 |
| 9 | 9 |
| 10 | 11 |
| 11 | 17 |
| 12 | 20 |
| 13 | 26 |
| 14 | 31 |
| 15 | 41 |
| 16 | 47 |
| 17 | 62 |
| 18 | 72 |
| 19 | 93 |
| 20 | 108 |
| 21 | 136 |
| 22 | 156 |
| 23 | 199 |
| 24 | 226 |
| 25 | 279 |
| 26 | 321 |
| 27 | 398 |
| 28 | 452 |
| 29 | 555 |
| 30 | 630 |
| 31 | 767 |
| 32 | 873 |
| 33 | 1051 |
| 34 | 1188 |
| 35 | 1433 |
| 36 | 1618 |
| 37 | 1930 |
| 38 | 2185 |
| 39 | 2595 |
| 40 | 2921 |
| 41 | 3458 |
| 42 | 3891 |
| 43 | 4580 |
| 44 | 5155 |
| 45 | 6036 |
| 46 | 6776 |
| 47 | 7926 |
| 48 | 8883 |
| 49 | 10324 |
| 50 | 11577 |
| 51 | 13421 |
| 52 | 15014 |
[0,0,1,2,2,3,4,6,7,9,11,17,20,26,31,41,47,62,72, 93,108,136,156,199,226,279,321,398,452,555,630, 767,873,1051,1188,1433,1618,1930,2185,2595,2921, 3458,3891,4580,5155,6036,6776,7926,8883,10324, 11577,13421,15014] |