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%I #19 Sep 08 2022 08:46:14
%S 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,26,27,
%T 28,29,30,31,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,51,52,
%U 53,54,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,76,77,78,79,80,82,83
%N Numbers n such that A002322(n) + 1 is a prime, where A002322 is Carmichael lambda.
%C Complement of A263029.
%H Antti Karttunen, <a href="/A263028/b263028.txt">Table of n, a(n) for n = 1..39743</a>
%t Select[Range[1, 100], PrimeQ[CarmichaelLambda[#] + 1] &]
%o (Magma) [1] cat [n: n in [2..100] | IsPrime(CarmichaelLambda(n)+1)];
%o (PARI) for(n=1, 1e3, if(isprime((1 + lcm(znstar(n)[2]))), print1(n", "))) \\ _Altug Alkan_, Oct 12 2015
%Y Cf. A002322, A263027, A263029, A296077 (characteristic function).
%Y Cf. also A039698.
%K nonn,easy
%O 1,2
%A _Vincenzo Librandi_, Oct 12 2015
%E More terms from _Antti Karttunen_, Dec 05 2017
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