1,2
Table of n, a(n) for n=1..6.
0! + 1! + 3! = 2! + 3! = 2^3; 1! + 2! + 4! = 3^3; 2! + 3! + 4! = 0! + 1! + 3! + 4! = 2^5; 0! + 1! + 3! + 5! = 2! + 3! + 5! = 2^7; 1! + 2! + 3! + 6! = 3^6 (= 27^2).
Cf. A025494, A051761.
Sequence in context: A116002 A097054 A056824 * A213519 A066215 A086213
Adjacent sequences: A051757 A051758 A051759 * A051761 A051762 A051763
nonn
Paul.Jobling(AT)WhiteCross.com Thu Aug 10 07:10:41 2000
approved
