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A117686
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Squares for which the product of the digits are cubes.
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0
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0, 1, 81, 100, 400, 900, 1024, 1089, 1444, 1600, 2025, 2209, 2304, 2401, 2500, 2601, 2704, 2809, 3025, 3249, 3364, 3600, 4096, 4900, 5041, 6084, 6400, 7056, 8100, 8649, 9025, 9409, 9604, 9801, 10000, 10201, 10404, 10609, 10816, 11025, 11881, 12100
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OFFSET
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0,3
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LINKS
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EXAMPLE
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81 is in the sequence because it is a square and the product of its digits 1*8=8 is a cube.
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MATHEMATICA
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Select[Range[0, 200]^2, IntegerQ[Surd[Times@@IntegerDigits[#], 3]]&] (* Harvey P. Dale, Feb 01 2019 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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Luc Stevens (lms022(AT)yahoo.com), Apr 12 2006
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STATUS
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approved
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