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A051383
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Sum of two (possibly negative) cubes in at least 3 ways.
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4
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728, 3367, 4104, 5824, 5859, 19656, 26936, 32832, 46592, 46683, 46872, 65728, 68913, 90909, 91000, 101528, 110808, 124488, 134379, 152551, 155736, 157248, 158193, 165464, 168112, 184464, 195841, 205352, 215488, 249704, 262656
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OFFSET
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1,1
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LINKS
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EXAMPLE
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4104 = 18^3 + (-12)^3 = 16^3 + 2^3 = 15^3 + 9^3, so 4104 is in the sequence.
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PROG
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(PARI) is(n)=#thue(thueinit(z^3+1), n)>4 \\ Ralf Stephan, Oct 18 2013
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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