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%I #15 Jul 13 2022 19:25:46
%S 3,4,5,6,7,8,19,20,21,22,23,24,29,30,32,33,34,35,36,47,48,61,62,63,97,
%T 98,99,100,181,182,183,184,185,186,187,188,189,190,233,234,235,236,
%U 237,238,307,308,309,310,401,402,403,404,405,406,407,408,887,888,889,890
%N Values of k for which A003418(k) - 1 is prime.
%C Fewer distinct primes than distinct values of a(n) are generated. So, e.g., k = 97, 98, 99, 100 all correspond to lcm([1..97]) - 1 = 69720375229712477164533808935312303556799, a prime.
%H Jinyuan Wang, <a href="/A057825/b057825.txt">Table of n, a(n) for n = 1..125</a>
%o (PARI) isok(k) = ispseudoprime(lcm(vector(k, i, i))-1); \\ _Jinyuan Wang_, May 02 2020
%Y Cf. A003418, A049536, A049537, A051451.
%K nonn
%O 1,1
%A _Labos Elemer_, Nov 08 2000