login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A020224
Pseudoprimes to base 96.
1
65, 95, 133, 469, 485, 679, 781, 973, 1105, 1261, 1273, 1649, 1729, 1843, 2465, 2641, 2665, 2701, 2821, 3545, 3977, 4187, 4577, 5617, 6097, 6305, 6499, 6601, 8905, 8911, 9121, 9215, 9217, 9313, 10585, 11155, 11881, 12649, 12901, 13289, 13333, 13483
OFFSET
1,1
COMMENTS
Composite numbers n such that 96^(n-1) == 1 (mod n). - Michel Lagneau, Feb 18 2012
MATHEMATICA
base = 96; t = {}; n = 1; While[Length[t] < 100, n++; If[! PrimeQ[n] && PowerMod[base, n-1, n] == 1, AppendTo[t, n]]]; t (* T. D. Noe, Feb 21 2012 *)
CROSSREFS
Cf. A001567 (pseudoprimes to base 2).
Sequence in context: A283656 A020194 A094447 * A063519 A299456 A300094
KEYWORD
nonn
STATUS
approved