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A029565 Quasi-Carmichael numbers to base -5: squarefree composites n such that prime p|n ==> p+5|n+5. 2
715, 1015, 5467, 14539, 16555, 16891, 17155, 22351, 32395, 36295, 41595, 42427, 45787, 47515, 53815, 62491, 70219, 100219, 114835, 115843, 131035, 145915, 153049, 160771, 191851, 204295, 217147, 220891, 240331, 267235, 267691, 321745, 356155 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..6078 (terms < 10^12)

Index entries for sequences related to Carmichael numbers.

MATHEMATICA

qcp[n_, d_] := Block[{p, e}, {p, e} = Transpose@FactorInteger@n;

Length[p] > 1 && Max[e] == 1 && And @@ IntegerQ /@ ((n + d)/(p + d))]; Select[Range[10^6], qcp[#, 5] &] (* Giovanni Resta, May 21 2013 *)

CROSSREFS

Sequence in context: A005467 A214186 A255788 * A154042 A027809 A222912

Adjacent sequences:  A029562 A029563 A029564 * A029566 A029567 A029568

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified August 6 18:59 EDT 2020. Contains 336256 sequences. (Running on oeis4.)