A364564 Largest prime factor computed for those odd numbers k for which A156552(k) < k.

1, 3, 5, 3, 5, 7, 5, 3, 7, 5, 7, 11, 7, 5, 11, 3, 13, 11, 7, 11, 5, 5, 13, 7, 11, 13, 7, 17, 7, 13, 17, 5, 11, 3, 7, 13, 11, 17, 11, 7, 19, 13, 7, 13, 17, 11, 5, 11, 5, 17, 13, 7, 13, 11, 13, 7, 11, 17, 7, 13, 17, 11, 5, 19, 13, 17, 19, 5, 11, 13, 3, 7, 19, 17, 13, 11, 17, 13, 11, 17, 7, 11, 19, 17, 7, 19, 13, 13

Offset: 1

Author

Antti Karttunen, Jul 28 2023

Keywords

• nonn

Comments

These primes must stay reasonably small, but how small?

See also the example section of A364551.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..13739

Crossrefs

Cf. A006530, A156552, A364551, A364561.

Formula

a(n) = A006530(A364561(n)).