A334094 Primes p for which A329697(p) == 4.

43, 47, 59, 67, 71, 79, 107, 109, 131, 149, 151, 157, 167, 179, 181, 227, 233, 239, 251, 281, 293, 307, 313, 337, 433, 443, 521, 593, 601, 613, 673, 809, 821, 823, 881, 929, 953, 971, 977, 1021, 1201, 1217, 1249, 1637, 1697, 1931, 2081, 2113, 2309, 2657, 2689, 2741, 2789, 2819, 3203, 3209, 3299, 3457, 3469, 3593, 3617, 3847, 3881, 4001

Offset

1,1

Comments

Primes p of the form of the form A334103(n) + 1, for some n >= 1.

Links

Antti Karttunen, Table of n, a(n) for n = 1..330; all terms < 2^31

Prog

(PARI)
A329697(n) = if(!bitand(n, n-1), 0, 1+A329697(n-(n/vecmax(factor(n)[, 1]))));
isA334094(n) = (isprime(n)&&(4==A329697(n)));

Crossrefs

Primes in A334104.

Cf. A000040, A010051, A052126, A171462, A329697, A334103.

Cf. also A019434, A334092, A334093, A334095, A334096.

Sequence in context: A095479 A156783 A273595 * A033230 A330981 A180519

Adjacent sequences: A334091 A334092 A334093 * A334095 A334096 A334097

Keyword

nonn

Author

Antti Karttunen, Apr 14 2020

Status

approved