A108562 Primes of the form prime(n) + prime(n+1) - 2n - 1.

2, 3, 5, 13, 17, 53, 61, 79, 103, 109, 137, 151, 163, 179, 229, 271, 277, 317, 353, 409, 419, 431, 439, 443, 491, 499, 547, 557, 569, 593, 619, 631, 641, 677, 719, 811, 887, 937, 997, 1009, 1021, 1051, 1063, 1091, 1201, 1229, 1249, 1259, 1307, 1327, 1367

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[(#[[3]]+#[[2]]-2#[[1]]-1)&/@(Join[{PrimePi[#[[1]]]}, #]&/@ Partition[ Prime[Range[200]], 2, 1]), PrimeQ] (* Harvey P. Dale, Sep 07 2012 *)

Crossrefs

Cf. A108568.

Sequence in context: A163268 A235624 A355518 * A087523 A073919 A162573

Adjacent sequences: A108559 A108560 A108561 * A108563 A108564 A108565

Keyword

easy,nonn

Author

Giovanni Teofilatto, Jul 05 2005

Extensions

Extended by Ray Chandler, Jul 10 2005

Status

approved