A093984 Number of prime pairs below 10^n having a difference of 60.

0, 0, 0, 0, 1, 96, 1834, 28439, 371839, 4404886, 48938947, 521616486, 5401237011, 54805745434, 548075949031, 5423125663893, 53243632952888, 519719164238055

Offset

1,6

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(7) = 1834 because there are 1834 prime gaps of 60 below 10^7.

Crossrefs

Cf. A007508, A093983.

Sequence in context: A071765 A064243 A001667 * A159711 A268636 A233153

Adjacent sequences: A093981 A093982 A093983 * A093985 A093986 A093987

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