|
%I #20 Feb 26 2022 11:36:18
%S 49,91,245,259,329,427,481,637,703,793,833,1105,1267,1645,1729,1813,
%T 1891,1921,2257,2303,2305,2353,2465,2701,2821,2989,3367,3439,4465,
%U 4753,5185,5537,5551,5611,5951,6533,6601,6697,6721,7345,8869,8911,9457,9881,10021
%N Pseudoprimes to base 48.
%C Composite numbers n such that 48^(n-1) == 1 (mod n). - _Michel Lagneau_, Feb 18 2012
%H T. D. Noe, <a href="/A020176/b020176.txt">Table of n, a(n) for n = 1..1000</a>
%H <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>
%t base = 48; 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 *)
%t Select[Range[11000],CompositeQ[#]&&PowerMod[48,#-1,#]==1&] (* _Harvey P. Dale_, Feb 26 2022 *)
%Y Cf. A001567 (pseudoprimes to base 2).
%K nonn
%O 1,1
%A _David W. Wilson_
|
