A227645 Perfect powers equal to the sum of 4 factorial numbers.

4, 8, 9, 16, 27, 32, 125, 128, 169, 243, 361, 729, 961, 1444, 10201, 403225, 725904

Offset

1,1

Comments

a(18), if it exists, is larger than 10^100.

Links

Table of n, a(n) for n=1..17.

Giovanni Resta, Decompositions of a(1)-a(17)

Example

729 = 3^6 = 1! + 2! + 3! + 6!.

Crossrefs

Cf. A114377, A227644-A227651, A082920.

Sequence in context: A324723 A355580 A272758 * A285438 A089042 A340093

Adjacent sequences: A227642 A227643 A227644 * A227646 A227647 A227648

Keyword

nonn

Author

Giovanni Resta, Jul 19 2013

Status

approved