cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A154487 a(n+1)-+a(n)=prime, a(1)=0,a(2)=7.

Original entry on oeis.org

0, 7, 10, 13, 16, 21, 26, 33, 38, 41, 48, 53, 56, 75, 82, 85, 88, 91, 102, 109, 114, 119, 122, 129, 134, 137, 140, 143, 150, 157, 160, 171, 176, 183, 190, 193, 196, 201, 208, 211, 222, 227, 230, 233, 246, 253, 256, 267, 274, 297, 302, 305, 308, 311, 330, 343
Offset: 1

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Comments

Sum and difference of any of two consecutive numbers in current sequence are prime numbers : 10-7=3;10+7=17, 230-227=3;230+227=457, 233-230=3;233+230=463,...
Essentially the same as A090955. - R. J. Mathar, Jan 12 2009

Crossrefs

Programs

  • Mathematica
    a=0;b=7;lst={a,b};Do[If[PrimeQ[n-b]&&PrimeQ[n+b],AppendTo[lst,n];a=b;b=n],{n,b+1,7!}];lst

Extensions

NAME adapted to offset. - R. J. Mathar, Jun 19 2021