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 | 19 |
| 3 | 162 |
| 4 | 967 |
| 5 | 7845 |
| 6 | 58434 |
| 7 | 462825 |
| 8 | 3560859 |
| 9 | 27478512 |
| 10 | 213540131 |
| 11 | 1655543599 |
| 12 | 12828732416 |
| 13 | 99455874997 |
| 14 | 771029045491 |
| 15 | 5977169558845 |
| 16 | 46336520563805 |
| 17 | 359215034469100 |
| 18 | 2784731837712288 |
| 19 | 21587977565996803 |
| 20 | 167356072621226437 |
[1,19,162,967,7845,58434,462825,3560859,27478512, 213540131,1655543599,12828732416,99455874997, 771029045491,5977169558845,46336520563805, 359215034469100,2784731837712288, 21587977565996803,167356072621226437] |