A093980 Number of prime pairs below 10^n having a difference of 52.

0, 0, 0, 0, 7, 77, 1449, 20595, 245804, 2742998, 29110017, 299020127, 3003793520, 29716977932, 290866351434, 2825566144010, 27301389990843, 262790215350706

Offset

1,5

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), 2033-2060.

Example

a(5) = 7 because there are 7 prime gaps of 52 below 10^5.

Crossrefs

Cf. A007508, A093979, A093981.

Sequence in context: A246460 A222145 A240404 * A077706 A080492 A342347

Adjacent sequences: A093977 A093978 A093979 * A093981 A093982 A093983

Keyword

nonn,more

Author

Enoch Haga, Apr 24 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