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A117685 Squares for which the sum of the digits are cubes. 2

%I #5 Nov 21 2013 12:48:57

%S 0,1,100,3969,7569,8649,10000,12996,13689,15876,19881,33489,34596,

%T 36864,42849,45369,46656,47961,49284,51984,54756,56169,59049,66564,

%U 71289,74529,76176,77841,79524,82944,84681,86436,88209,91809,93636,95481,97344,99225

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

%H Harvey P. Dale, <a href="/A117685/b117685.txt">Table of n, a(n) for n = 0..1000</a>

%e 8649 is in the sequence because it is a square and the sum of the digits 8+6+4+9=27 is a cube.

%t Select[Range[0,400]^2,IntegerQ[Power[Total[IntegerDigits[#]], (3)^-1]]&] (* _Harvey P. Dale_, Jan 28 2012 *)

%Y Cf. A000290, A000578.

%K nonn,base

%O 0,3

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

%E Corrected (a(18) inserted) and extended by Harvey P. Dale, Jan 28 2012

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)