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 A273043 Discriminator of sequence A001566. 4
 1, 3, 3, 7, 37, 37, 37, 37, 37, 37, 59, 59, 59, 59, 73, 73, 73, 73, 73, 97, 97, 97, 137, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 157, 251, 251, 251, 251, 251, 251, 251, 251, 251, 251, 277, 277, 277, 277, 277, 277, 277 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The discriminator of a sequence is the least integer k such that the first n terms of the sequence are pairwise incongruent, modulo k. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE N:= 1000: # to get a(1)..a(n) nmax:= 0: for m from 1 while nmax <= N do   a:= 3 mod m; A:= {a};   for n from 1 while nops(A) = n do     a:= a^2 - 2 mod m;     A:= A union {a};   od:   for k from nmax+1 to n-1 do v[k]:= m od:   nmax:= max(nmax, n-1); od: seq(v[k], k=1..N); # Robert Israel, May 13 2016 CROSSREFS Cf. A001566. Sequence in context: A191498 A065747 A232309 * A066142 A232459 A175566 Adjacent sequences:  A273040 A273041 A273042 * A273044 A273045 A273046 KEYWORD nonn AUTHOR Jeffrey Shallit, May 13 2016 EXTENSIONS a(13)-a(28) from Tom Edgar, May 13 2016 a(29)-a(57) from Robert Israel, May 13 2016 STATUS approved

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Last modified June 14 15:19 EDT 2021. Contains 345025 sequences. (Running on oeis4.)