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 | 4 |
| 3 | 29 |
| 4 | 320 |
| 5 | 4741 |
| 6 | 88384 |
| 7 | 1988489 |
| 8 | 52448000 |
| 9 | 1587545161 |
| 10 | 54252120064 |
| 11 | 2066298252149 |
| 12 | 86799115489280 |
| 13 | 3986897970744781 |
| 14 | 198795278022098944 |
| 15 | 10694247962623751009 |
| 16 | 617392620634705756160 |
| 17 | 38074395493710549747601 |
| 18 | 2498063366053169206657024 |
| 19 | 173745719989547715852773069 |
[1,1,4,29,320,4741,88384,1988489,52448000, 1587545161,54252120064,2066298252149, 86799115489280,3986897970744781, 198795278022098944,10694247962623751009, 617392620634705756160,38074395493710549747601, 2498063366053169206657024, 173745719989547715852773069] |