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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 4 |
| 8 | 5 |
| 9 | 6 |
| 10 | 7 |
| 11 | 9 |
| 12 | 11 |
| 13 | 13 |
| 14 | 17 |
| 15 | 20 |
| 16 | 25 |
| 17 | 31 |
| 18 | 38 |
| 19 | 47 |
| 20 | 57 |
| 21 | 70 |
| 22 | 86 |
| 23 | 105 |
| 24 | 129 |
| 25 | 158 |
| 26 | 194 |
| 27 | 238 |
| 28 | 291 |
| 29 | 357 |
| 30 | 437 |
| 31 | 536 |
| 32 | 656 |
| 33 | 804 |
| 34 | 985 |
| 35 | 1206 |
| 36 | 1477 |
| 37 | 1810 |
| 38 | 2216 |
| 39 | 2715 |
| 40 | 3325 |
| 41 | 4072 |
| 42 | 4987 |
| 43 | 6108 |
| 44 | 7481 |
| 45 | 9163 |
| 46 | 11222 |
| 47 | 13744 |
| 48 | 16834 |
| 49 | 20617 |
| 50 | 25251 |
| 51 | 30926 |
[1,1,1,1,2,2,3,4,5,6,7,9,11,13,17,20,25,31,38,47, 57,70,86,105,129,158,194,238,291,357,437,536,656, 804,985,1206,1477,1810,2216,2715,3325,4072,4987, 6108,7481,9163,11222,13744,16834,20617,25251, 30926] |