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 A212912 Numbers n such that 3^(m+3)==9(mod m) where m=(n-1)^2-1 0
 3, 5, 7, 11, 17, 37, 47, 53, 67, 97, 101, 121, 211, 257, 367, 379, 457, 617, 911, 1091, 1237, 1297, 1361, 1549, 2003, 2557, 2851, 2897, 3517, 3733, 4201 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Composite begin - 121, 108781, 155365, 267547, 2774521, 3166087, 3225601, 4907701, 8341201, 10712857, 11035921, 13216141, 17559829, 21708961, 29641921, 31116241, 31150351.... all composite == 1(mod 3) ??? LINKS PROG (PARI) for(n=2, 1000, m=n^2-1; if(Mod(3, m)^(m+3)==9, print(n+1))); CROSSREFS Sequence in context: A116457 A037155 A282632 * A038944 A124081 A119573 Adjacent sequences:  A212909 A212910 A212911 * A212913 A212914 A212915 KEYWORD nonn AUTHOR Alzhekeyev Ascar M, May 30 2012 STATUS approved

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Last modified July 17 14:44 EDT 2019. Contains 325106 sequences. (Running on oeis4.)