

A093746


Number of prime pairs below 10^n having a difference of 22.


2



0, 0, 0, 16, 223, 2172, 19451, 175945, 1569679, 13954281, 124059643, 1105634145, 9888091790, 88792328084, 800651549083, 7249252855793, 65896837322878, 601279985076759
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OFFSET

1,4


LINKS

Table of n, a(n) for n=1..18.
Siegfried "Zig" Herzog, Frequency of Occurrence of Prime Gaps
T. Oliveira e Silva, S. Herzog, and S. Pardi, Empirical verification of the even Goldbach conjecture and computation of prime gaps up to 4.10^18, Math. Comp., 83 (2014), 20332060.


EXAMPLE

a(4) = 16 because there are 16 prime gaps of 22 below 10^4.


CROSSREFS

Cf. A007508, A093745, A093747.
Sequence in context: A076073 A092657 A078266 * A118779 A209444 A051822
Adjacent sequences: A093743 A093744 A093745 * A093747 A093748 A093749


KEYWORD

nonn,more


AUTHOR

Enoch Haga, Apr 15 2004


EXTENSIONS

a(10)a(13) from Washington Bomfim, Jun 22 2012
a(14)a(18) from S. Herzog's website added by Giovanni Resta, Aug 14 2018


STATUS

approved



