%I #5 Jul 19 2013 06:04:06
%S 4,8,9,16,27,32,125,128,169,243,361,729,961,1444,10201,403225,725904
%N Perfect powers equal to the sum of 4 factorial numbers.
%C a(18), if it exists, is larger than 10^100.
%H Giovanni Resta, <a href="/A227645/a227645.txt">Decompositions of a(1)-a(17)</a>
%e 729 = 3^6 = 1! + 2! + 3! + 6!.
%Y Cf. A114377, A227644-A227651, A082920.
%K nonn
%O 1,1
%A _Giovanni Resta_, Jul 19 2013