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A117688 Cubes for which the sum of the digits is a square. 0
0, 1, 27, 216, 1000, 27000, 216000, 287496, 884736, 970299, 1000000, 1860867, 2146689, 3581577, 3796416, 4019679, 5000211, 6128487, 6434856, 6751269, 7414875, 7762392, 10077696, 14348907, 15438249, 16581375, 21717639, 22425768 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..27.

EXAMPLE

216 is in the sequence because it is a cube and the sum of its digits 2+1+6=9 is a square.

MATHEMATICA

Select[Range[0, 300]^3, IntegerQ[Sqrt[Total[IntegerDigits[#]]]]&] (* Harvey P. Dale, Mar 29 2012 *)

CROSSREFS

Cf. A000290, A000578.

Sequence in context: A224354 A224013 A059827 * A272342 A107054 A160441

Adjacent sequences: A117685 A117686 A117687 * A117689 A117690 A117691

KEYWORD

nonn,base

AUTHOR

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

STATUS

approved

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Last modified November 30 21:57 EST 2022. Contains 358453 sequences. (Running on oeis4.)