A075431 Primes of the form n+mu(n), where mu is the Moebius function (A008683).

2, 7, 11, 23, 29, 41, 47, 59, 83, 101, 107, 109, 113, 137, 167, 173, 179, 181, 211, 227, 229, 257, 263, 281, 317, 331, 347, 353, 359, 373, 383, 401, 409, 433, 463, 467, 479, 503, 547, 563, 571, 587, 601, 617, 641, 653, 677, 691, 709, 719, 761, 821, 829, 839, 853

Offset: 1

Author

Reinhard Zumkeller, Sep 15 2002

Keywords

• nonn

Comments

Subsequence of A075430.

Links

• Andrew Howroyd, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A063015, A039787, A049097.

Programs

PARI

isok(p)={isprime(p) && (moebius(p+1) == -1 || moebius(p-1) == 1)} \\ Andrew Howroyd, Apr 20 2021

Extensions

Terms a(41) and beyond from Andrew Howroyd, Apr 20 2021