A067831 Primes p such that sigma(p-6) < p.

7, 11, 13, 17, 19, 23, 29, 37, 43, 47, 53, 59, 67, 73, 79, 89, 103, 107, 109, 113, 137, 157, 163, 173, 179, 197, 199, 229, 233, 239, 257, 263, 269, 277, 283, 313, 317, 337, 353, 359, 373, 379, 389, 439, 449, 463, 467, 509, 547, 563, 569, 577, 593, 599, 607

Offset

1,1

Comments

Superset of A046117. - R. J. Mathar, Sep 30 2008

Links

Table of n, a(n) for n=1..55.

Mathematica

Select[Prime[Range[4, 200]], DivisorSigma[1, #-6]<#&] (* Harvey P. Dale, Aug 10 2023 *)

Crossrefs

Cf. A046117, A067832.

Sequence in context: A283532 A163648 A135776 * A086998 A028416 A040121

Adjacent sequences: A067828 A067829 A067830 * A067832 A067833 A067834

Keyword

nonn

Author

Benoit Cloitre, Feb 08 2002

Status

approved