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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 21 |
| 10 | 33 |
| 11 | 169 |
| 12 | 271 |
| 13 | 1427 |
| 14 | 2719 |
| 15 | 19923 |
| 16 | 41145 |
| 17 | 1164335 |
| 18 | 2872687 |
| 19 | 96665317 |
| 20 | 273847235 |
| 21 | 9740767609 |
| 22 | 31500367345 |
| 23 | 1586820300667 |
| 24 | 5818312961823 |
| 25 | 565090352547181 |
| 26 | 2386581867483507 |
| 27 | 366376672212858833 |
| 28 | 1779376151775593621 |
[1,1,1,1,1,1,1,1,21,33,169,271,1427,2719,19923, 41145,1164335,2872687,96665317,273847235, 9740767609,31500367345,1586820300667, 5818312961823,565090352547181,2386581867483507, 366376672212858833,1779376151775593621] |