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A085267
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Numbers having at least two representations as sum of a squarefree number and a nonzero square.
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2
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6, 7, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78
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OFFSET
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1,1
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COMMENTS
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Numbers n such that A085263(a(n)) > 1.
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LINKS
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PROG
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(PARI) is(n)=my(t); forstep(k=sqrtint(n-1), 1, -1, if(issquarefree(n-k^2), if(t++>1, return(1)))); 0 \\ Charles R Greathouse IV, Mar 12 2012
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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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