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A117685 Squares for which the sum of the digits are cubes. 2
0, 1, 100, 3969, 7569, 8649, 10000, 12996, 13689, 15876, 19881, 33489, 34596, 36864, 42849, 45369, 46656, 47961, 49284, 51984, 54756, 56169, 59049, 66564, 71289, 74529, 76176, 77841, 79524, 82944, 84681, 86436, 88209, 91809, 93636, 95481, 97344, 99225 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..1000

EXAMPLE

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

MATHEMATICA

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

CROSSREFS

Cf. A000290, A000578.

Sequence in context: A112889 A118490 A146310 * A091134 A017816 A250699

Adjacent sequences:  A117682 A117683 A117684 * A117686 A117687 A117688

KEYWORD

nonn,base

AUTHOR

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

EXTENSIONS

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

STATUS

approved

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Last modified January 18 01:05 EST 2020. Contains 330995 sequences. (Running on oeis4.)