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 A211449 (p-1)/x, where p = prime(n) and x = ord(4,p), the smallest positive integer such that 4^x == 1 mod p. 6
 0, 2, 2, 2, 2, 2, 4, 2, 2, 2, 6, 2, 4, 6, 2, 2, 2, 2, 2, 2, 8, 2, 2, 8, 4, 2, 2, 2, 6, 8, 18, 2, 4, 2, 2, 10, 6, 2, 2, 2, 2, 2, 2, 4, 2, 2, 2, 6, 2, 6, 8, 2, 20, 10, 32, 2, 2, 2, 6, 8, 6, 2, 6, 2, 4, 2, 22, 16, 2, 2, 8, 2, 2, 2, 2, 2, 2, 18, 4, 4, 2, 2, 10, 12 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS T. D. Noe, Table of n, a(n) for n = 1..1000 MATHEMATICA nn = 4; Table[If[Mod[nn, p] == 0, 0, (p-1)/MultiplicativeOrder[nn, p]], {p, Prime[Range[100]]}] CROSSREFS Cf. A001917, A094593, A211450, A211451, A211452, A211453, A211454, A006556. Sequence in context: A060594 A327813 A104361 * A086876 A066691 A260123 Adjacent sequences: A211446 A211447 A211448 * A211450 A211451 A211452 KEYWORD nonn AUTHOR T. D. Noe, Apr 11 2012 STATUS approved

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Last modified June 6 01:24 EDT 2023. Contains 363138 sequences. (Running on oeis4.)