login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031168 a(n) = prime(n+6) - prime(n). 11
15, 16, 18, 22, 20, 24, 24, 24, 24, 24, 28, 24, 26, 28, 26, 26, 24, 28, 30, 30, 30, 28, 26, 24, 30, 30, 34, 32, 40, 38, 30, 32, 30, 34, 30, 30, 34, 30, 30, 26, 32, 42, 36, 36, 36, 40, 30, 28, 30, 34, 36, 32, 36, 30, 26, 30, 38, 40, 36, 36, 48, 44, 40, 38, 40, 42, 36 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MAPLE

seq(ithprime(n+6)-ithprime(n), n=1..70);

MATHEMATICA

a=6; t=Array[Prime, 123]; Drop[t, a]-Drop[t, -a] (* Vladimir Joseph Stephan Orlovsky, Aug 13 2009 *)

Last[#]-First[#]&/@Partition[Prime[Range[80]], 7, 1] (* Harvey P. Dale, Jan 12 2012 *)

PROG

(Magma) [NthPrime(n+6)-NthPrime(n): n in [1..100] ]; // Vincenzo Librandi, Apr 23 2011

(Haskell)

a031168 n = a031168_list !! (n-1)

a031168_list = zipWith (-) (drop 6 a000040_list) a000040_list

-- Reinhard Zumkeller, Aug 23 2015

CROSSREFS

Cf. A000040, A001223, A031131, A031165, A031166, A031167, A031169, A031170, A031171, A031172.

Sequence in context: A281879 A354626 A114841 * A108856 A241750 A039689

Adjacent sequences: A031165 A031166 A031167 * A031169 A031170 A031171

KEYWORD

nonn

AUTHOR

Jeff Burch

EXTENSIONS

Offset changed from 2 to 1, and a(1)=15 added, by Vincenzo Librandi, Apr 23 2011

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 9 23:05 EST 2022. Contains 358710 sequences. (Running on oeis4.)