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A093979 Number of prime pairs below 10^n having a difference of 50. 0
0, 0, 0, 0, 5, 106, 2048, 27522, 328066, 3607750, 37931633, 386726111, 3862450797 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..13.

FORMULA

Count prime pairs below 10^n having a difference of 50

EXAMPLE

a(5)=5 because there are 5 prime gaps of 50 below 10^5

MATHEMATICA

a[n_] := Length@Select[Select[Range[1, 10^n - 50], PrimeQ[#] &], 50 == NextPrime[#] - # &]

a /@ Range[1, 6] (* Julien Kluge, Dec 03 2016 *)

CROSSREFS

Sequence in context: A015002 A059490 A204109 * A293261 A142479 A204110

Adjacent sequences:  A093976 A093977 A093978 * A093980 A093981 A093982

KEYWORD

nonn,more

AUTHOR

Enoch Haga, Apr 24 2004

EXTENSIONS

a(10)-a(13) from Washington Bomfim, Jun 22 2012

STATUS

approved

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Last modified June 20 22:19 EDT 2018. Contains 305615 sequences. (Running on oeis4.)