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 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 21 |
| 6 | 40 |
| 7 | 75 |
| 8 | 140 |
| 9 | 262 |
| 10 | 490 |
| 11 | 917 |
| 12 | 1719 |
| 13 | 3221 |
| 14 | 6042 |
| 15 | 11339 |
| 16 | 21293 |
| 17 | 40011 |
| 18 | 75226 |
| 19 | 141522 |
| 20 | 266400 |
| 21 | 501765 |
| 22 | 945632 |
| 23 | 1783196 |
| 24 | 3364584 |
| 25 | 6352129 |
| 26 | 11999522 |
| 27 | 22681223 |
| 28 | 42897140 |
| 29 | 81180399 |
| 30 | 153722283 |
| 31 | 291264272 |
| 32 | 552210166 |
| 33 | 1047587957 |
[1,2,3,6,11,21,40,75,140,262,490,917,1719,3221, 6042,11339,21293,40011,75226,141522,266400,501765, 945632,1783196,3364584,6352129,11999522,22681223, 42897140,81180399,153722283,291264272,552210166, 1047587957] |