A031167 a(n) = prime(n+5) - prime(n).

11, 14, 14, 16, 18, 18, 20, 22, 20, 18, 22, 22, 20, 24, 24, 20, 20, 22, 22, 26, 28, 24, 24, 20, 16, 26, 28, 30, 30, 36, 24, 26, 26, 28, 24, 28, 24, 28, 26, 24, 20, 30, 32, 34, 32, 34, 28, 18, 24, 28, 30, 30, 30, 26, 24, 20, 24, 36, 34, 32, 34, 38, 30, 36, 36, 36, 28

Offset: 1

Author

Jeff Burch

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000040, A001223, A031131, A031165, A031166, A031168, A031169, A031170, A031171, A031172.

Programs

Haskell

a031167 n = a031167_list !! (n-1)
a031167_list = zipWith (-) (drop 5 a000040_list) a000040_list
-- Reinhard Zumkeller, Aug 23 2015

Magma

[NthPrime(n+5)-NthPrime(n): n in [1..100] ]; // Vincenzo Librandi, Apr 23 2011

Maple

seq(ithprime(n+5)-ithprime(n), n=1..30);

Mathematica

a=5; t=Array[Prime,123]; Drop[t,a]-Drop[t,-a] (* Vladimir Joseph Stephan Orlovsky, Aug 13 2009 *)
Last[#]-First[#]&/@Partition[Prime[Range[80]],6,1] (* Harvey P. Dale, Jul 11 2014 *)

PARI

A031167(n) = prime(n+5)-prime(n)

Extensions

Initial term added by Michael B. Porter, Jan 27 2010