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A002097
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Numbers that are not the sum of 3 nonzero triangular numbers.
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7
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OFFSET
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1,2
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COMMENTS
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LINKS
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MATHEMATICA
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Complement[Range[30], Union[Total/@Tuples[Accumulate[Range[8]], 3]]] (* Harvey P. Dale, Oct 06 2017 *)
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CROSSREFS
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KEYWORD
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fini,full,nonn
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AUTHOR
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STATUS
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approved
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