login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A093978 Number of prime pairs below 10^n having a difference of 48. 2
0, 0, 0, 0, 3, 196, 3784, 49824, 577247, 6250795, 64725830, 651790197, 6443528078, 62906425823, 608875308314, 5858471079330, 56139508762734, 536478118777779 (list; graph; refs; listen; history; text; internal format)
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) = 3 because there are 3 prime gaps of 48 below 10^5.

CROSSREFS

Cf. A007508, A093977, A093979.

Sequence in context: A230171 A332957 A203749 * A101382 A000724 A309749

Adjacent sequences:  A093975 A093976 A093977 * A093979 A093980 A093981

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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 14 09:22 EDT 2020. Contains 335720 sequences. (Running on oeis4.)