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A359518
Integers k such that A110299(k) is prime.
0
1, 2, 3, 5, 10, 17, 21, 28, 38, 50, 86, 88, 100, 375, 408, 630, 646, 1241, 1860, 4359, 15444, 17916, 74901, 91968, 101121
OFFSET
1,2
COMMENTS
Integers k such that Sum_{i=0..k-1} 2^i*prime(k-i) is prime.
EXAMPLE
For these k, A110299(k) is 2, 7, 19, 101, 3727, 481577, 7706203, 986404613, ... all prime.
PROG
(PARI) isok(k) = isprime(fromdigits(primes(k), 2));
CROSSREFS
Cf. A110299.
Sequence in context: A306006 A364641 A047011 * A259393 A018163 A339293
KEYWORD
nonn,more
AUTHOR
Michel Marcus, Jan 04 2023
EXTENSIONS
a(20)-a(22) from Pontus von Brömssen, Jan 04 2023
a(23)-a(25) from Michael S. Branicky, Oct 02 2024
STATUS
approved