A206023 2^n == 3n+2 (mod n^2-2n)

3, 5, 7, 13, 19, 31, 43, 61, 73, 103, 109, 139, 151, 181, 193, 199, 229, 241, 271, 283, 313, 349, 421, 433, 463, 523, 563, 571, 601, 619, 643, 645, 647, 661, 811, 823, 829, 859, 883, 1021, 1033, 1051, 1063, 1093, 1105, 1153, 1231, 1279, 1291, 1303, 1321, 1429

Offset

1,1

Comments

Consists of n such that each of n and n-2 are either prime (A000040) or Sarrus pseudoprimes (A001567).

Includes the upper twin primes (A006512).

Links

David W. Wilson, Table of n, a(n) for n = 1..10000

Crossrefs

Sequence in context: A336369 A111703 A184248 * A067829 A084696 A352952

Adjacent sequences: A206020 A206021 A206022 * A206024 A206025 A206026

Keyword

nonn

Author

David W. Wilson, Feb 02 2012

Status

approved