A022886 - OEIS

A022886

n-th index k such that p(k) + p(k+4) = p(k+1) + p(k+3).

2, 7, 10, 15, 17, 18, 19, 22, 36, 37, 49, 51, 55, 57, 71, 73, 75, 85, 90, 100, 102, 105, 107, 108, 113, 130, 131, 132, 138, 161, 164, 167, 172, 173, 184, 185, 199, 206, 209, 212, 216, 226, 239, 244, 251, 252, 253, 257, 261, 262, 265, 266, 272, 315

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

PROG

(PARI) isok(k) = (prime(k) + prime(k+4)) == (prime(k+1) + prime(k+3)); \\ Michel Marcus, Sep 30 2013

CROSSREFS

Sequence in context: A085303 A304799 A349499 * A047524 A190447 A190375

Adjacent sequences: A022883 A022884 A022885 * A022887 A022888 A022889

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

Corrected by R. J. Mathar, Aug 06 2015

STATUS

approved