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A078744
Numbers k such that A049614(k) + A000040(k) is prime.
1
1, 4, 6, 7, 8, 13, 17, 18, 21, 41, 86, 101, 144, 368, 1232, 1713, 2431, 2897, 6122, 6240, 6876
OFFSET
1,2
PROG
(PARI) is(k) = ispseudoprime(prod(i=1, k, i^!isprime(i)) + prime(k)); \\ Jinyuan Wang, Jan 08 2021
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jason Earls, Dec 21 2002
EXTENSIONS
a(17)-a(18) from Jinyuan Wang, Jan 08 2021
a(19)-a(21) from Michael S. Branicky, Aug 10 2024
STATUS
approved