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A176034
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Difference between product of two distinct primes and next perfect square.
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2
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3, 6, 2, 1, 4, 3, 10, 3, 2, 1, 11, 10, 3, 13, 9, 7, 6, 2, 16, 12, 7, 4, 18, 15, 14, 13, 9, 7, 6, 5, 15, 10, 6, 3, 2, 22, 21, 15, 11, 10, 3, 2, 1, 24, 23, 14, 11, 10, 8, 3, 19, 18, 13, 11, 9, 2, 24, 23, 22, 20, 19, 16, 12, 11, 10, 8, 7, 6, 4, 30, 21, 19, 9, 7, 3, 2, 30, 27, 24, 22, 15, 11, 2
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OFFSET
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1,1
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COMMENTS
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9-6=3, 16-10=6, 16-14=2, 16-15=1, 25-21=4,...
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LINKS
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Table of n, a(n) for n=1..83.
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MATHEMATICA
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f1[n_]:=Floor[Sqrt[n]]; f2[n_]:=Last/@FactorInteger[n]=={1, 1}; lst={}; Do[If[f2[n], AppendTo[lst, (f1[n]+1)^2-n]], {n, 0, 6!}]; lst
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CROSSREFS
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Cf. A006881, A056892, A106044, A176032, A176033
Sequence in context: A058078 A016551 A238555 * A255051 A145896 A159963
Adjacent sequences: A176031 A176032 A176033 * A176035 A176036 A176037
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KEYWORD
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nonn
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AUTHOR
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Vladimir Joseph Stephan Orlovsky, Apr 06 2010
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STATUS
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approved
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