

A025494


Squares which are the sum of factorials of distinct integers (probably finite).


12



1, 4, 9, 25, 121, 144, 729, 841, 5041, 5184, 45369, 46225, 363609, 403225, 3674889, 1401602635449
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OFFSET

1,2


COMMENTS

No other elements < 31!.  Paul.Jobling(AT)WhiteCross.com, Aug 10 2000
If there are any terms in either A014597 or A025494 beyond the last one given (i.e., n = 1183893 in A014597; equivalently n^2 = 1401602635449 in A025494), then n^2 must be greater than 48! (about 1.24139*10^61).  Jon E. Schoenfield, Aug 04 2006


LINKS

Table of n, a(n) for n=1..16.


CROSSREFS

Cf. A002034, A018194, A051760, A051761, A014597, A059589.
Subsequence of A059589.
Sequence in context: A167045 A262753 A055851 * A087374 A081948 A191273
Adjacent sequences: A025491 A025492 A025493 * A025495 A025496 A025497


KEYWORD

nonn


AUTHOR

David W. Wilson


STATUS

approved



