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A022886 n-th index k such that p(k) + p(k+4) = p(k+1) + p(k+3). 1

%I

%S 2,7,10,15,17,18,19,22,36,37,49,51,55,57,71,73,75,85,90,100,102,105,

%T 107,108,113,130,131,132,138,161,164,167,172,173,184,185,199,206,209,

%U 212,216,226,239,244,251,252,253,257,261,262,265,266,272,315

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

%o (PARI) isok(k) = (prime(k) + prime(k+4)) == (prime(k+1) + prime(k+3)); \\ _Michel Marcus_, Sep 30 2013

%K nonn

%O 1,1

%A _Clark Kimberling_

%E Corrected by _R. J. Mathar_, Aug 06 2015

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Last modified May 13 14:47 EDT 2021. Contains 343860 sequences. (Running on oeis4.)