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 | 3 |
| 3 | 31 |
| 4 | 297 |
| 5 | 5521 |
| 6 | 90843 |
| 7 | 2421391 |
| 8 | 56778897 |
| 9 | 1965992161 |
| 10 | 59991229683 |
| 11 | 2551838332351 |
| 12 | 96020199171897 |
| 13 | 4840069070838001 |
| 14 | 216719978024072523 |
| 15 | 12622971840715547311 |
| 16 | 655783794933664894497 |
| 17 | 43320949673000323765441 |
| 18 | 2562378473386758135272163 |
| 19 | 189242342019412261693784671 |
[1,1,3,31,297,5521,90843,2421391,56778897, 1965992161,59991229683,2551838332351, 96020199171897,4840069070838001, 216719978024072523,12622971840715547311, 655783794933664894497,43320949673000323765441, 2562378473386758135272163, 189242342019412261693784671] |