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Search: id:A113496
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| A113496 |
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a(n) = smallest composite integer > c(n) and coprime to c(n), where c(n) is the n-th composite integer. |
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+0
2
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| 9, 25, 9, 10, 21, 25, 15, 16, 21, 25, 21, 22, 25, 25, 26, 27, 28, 33, 49, 33, 34, 35, 36, 49, 39, 40, 49, 55, 45, 46, 49, 49, 50, 51, 52, 55, 55, 56, 57, 58, 63, 77, 63, 64, 65, 66, 85, 69, 70, 81, 77, 75, 76, 77, 78, 85, 81, 82, 85, 85, 86, 87, 88, 91, 91, 92, 93, 94, 95, 96
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n) = A113484(A002808(n)). - Robert G. Wilson v (rgwv(at)rgwv.com), Jan 12 2006
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MATHEMATICA
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Composite[n_Integer] := FixedPoint[n + PrimePi[ # ] + 1 &, n + PrimePi[n] + 1]; f[n_] := Block[{k = n + 1}, While[PrimeQ@k || GCD[k, n] > 1, k++ ]; k]; Array[ f[ Composite[ # ]] &, 70] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A002808, A113484.
Adjacent sequences: A113493 A113494 A113495 this_sequence A113497 A113498 A113499
Sequence in context: A050282 A096757 A101158 this_sequence A086531 A089091 A053850
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KEYWORD
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nonn
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AUTHOR
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Leroy Quet (qq-quet(AT)mindspring.com), Jan 11 2006
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Jan 12 2006
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