login
A114377
Perfect powers equal to the sum of three factorial numbers.
10
4, 8, 9, 27, 32, 36, 49, 128, 841, 5184
OFFSET
1,1
COMMENTS
a(11), if it exists, is larger than 10^100.
a(11), if it exists, is larger than 1024!. - Filip Zaludek, Sep 08 2018
EXAMPLE
a(1) = 4 because 4 = 1! + 1! + 2!;
a(2) = 8 because 8 = 1! + 1! + 3!;
a(3) = 9 because 9 = 1! + 2! + 3!.
CROSSREFS
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Feb 10 2006
EXTENSIONS
Offset corrected by Arkadiusz Wesolowski, Mar 06 2013
Example corrected by and a(9)-a(10) from Giovanni Resta, Jul 19 2013
STATUS
approved