login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Squares for which the product of the digits are cubes.
0

%I #4 Feb 01 2019 19:38:59

%S 0,1,81,100,400,900,1024,1089,1444,1600,2025,2209,2304,2401,2500,2601,

%T 2704,2809,3025,3249,3364,3600,4096,4900,5041,6084,6400,7056,8100,

%U 8649,9025,9409,9604,9801,10000,10201,10404,10609,10816,11025,11881,12100

%N Squares for which the product of the digits are cubes.

%e 81 is in the sequence because it is a square and the product of its digits 1*8=8 is a cube.

%t Select[Range[0,200]^2,IntegerQ[Surd[Times@@IntegerDigits[#],3]]&] (* _Harvey P. Dale_, Feb 01 2019 *)

%Y Cf. A000290, A000578.

%K nonn,base

%O 0,3

%A Luc Stevens (lms022(AT)yahoo.com), Apr 12 2006