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.

Showing 1-6 of 6 results.

A163852 Primes of the form Fibonacci(k)-3.

Original entry on oeis.org

2, 5, 31, 607, 628580612875886694881648328579603114508131388106874704297602636435532791990880832689119, 7531436383873795315009506236096188648036856522778750817396763797198414070984881727501992372613765176393353441439
Offset: 1

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Author

Keywords

Comments

Contains the numbers A000045(k)-3 for k = 5, 6, 9, 15, 417, 537, 2085,...
which equal A000040(j) for j = 1, 3, 11, 111,...

Crossrefs

Cf. A163851.

Programs

  • Mathematica
    Clear[lst,a,f,n,p]; a=3;lst={};Do[f=Fibonacci[n];If[PrimeQ[p=f-a]&&p>1,AppendTo[lst,p]],{n,3*6!}];lst

Extensions

Indices into Fibonacci and prime sequences added by R. J. Mathar, Aug 18 2009

A163853 Primes 4 less than some Fibonacci number.

Original entry on oeis.org

17, 229, 373, 983, 4177, 6761, 17707, 4052739537877, 190392490709131, 19740274219868223163, 354224848179261915071, 11825896447871834976429068423, 3807901929474025356630904134047
Offset: 1

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Keywords

Comments

Primes of the form A000045(i)-4, generated by i= 8, 13, 14, 16, 19, 20, 22,...
representing prime(j) at j= 4, 7, 50, 74, 166, 574, 870, 2033,...

Crossrefs

Programs

  • Mathematica
    Clear[lst,a,f,n,p]; a=4;lst={};Do[f=Fibonacci[n];If[PrimeQ[p=f-a]&&p> 1,AppendTo[lst,p]],{n,3*6!}];lst
    Select[Fibonacci[Range[4,300]]-4,PrimeQ] (* Harvey P. Dale, Jul 12 2025 *)

Extensions

Some indices to Fibonacci and prime sequences added by R. J. Mathar, Sep 17 2009

A163854 Primes of the form Fibonacci(k)-5.

Original entry on oeis.org

3, 29, 139, 2579, 3987795824799770715342824788687062628452272409956636682999616403, 8269366108663463411004717981412027167937978847386801205243459016220834185059487057691
Offset: 1

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Keywords

Comments

Corresponding k are 6, 9, 12, 18, 306, 408, 3696, 4122, ...

Crossrefs

Programs

  • Mathematica
    Clear[lst,a,f,n,p]; a=5;lst={};Do[f=Fibonacci[n];If[PrimeQ[p=f-a]&&p>1,AppendTo[lst,p]],{n,3*6!}];lst

Extensions

Comment from Charles R Greathouse IV, Oct 05 2009

A163855 Primes p such that p+6 is a Fibonacci number.

Original entry on oeis.org

2, 7, 83, 227, 24157811, 2971215067, 53316291167, 5527939700884751, 99194853094755491, 420196140727489667, 4660046610375530303, 83621143489848422971, 1066340417491710595814572163
Offset: 1

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Keywords

Crossrefs

Programs

  • Mathematica
    Clear[lst,a,f,n,p]; a=6;lst={};Do[f=Fibonacci[n];If[PrimeQ[p=f-a]&&p>1,AppendTo[lst,p]],{n,3*6!}];lst
    Select[Fibonacci[Range[5,200]]-6,PrimeQ] (* Harvey P. Dale, Jun 01 2024 *)

A205719 Primes of the form Fibonacci(n) + 3.

Original entry on oeis.org

5, 11, 37, 613, 10949, 63245989, 679891637638612261, 7308805952221443105020355493, 13598018856492162040239554477268293, 453973694165307953197296969697410619233829
Offset: 1

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Keywords

Crossrefs

Programs

  • Mathematica
    Select[Fibonacci[Range[1000]]+3, PrimeQ]

A163856 Primes of the form Fibonacci(k)-10.

Original entry on oeis.org

3, 11, 79, 223, 367, 977, 514219, 24157807, 53316291163, 420196140727489663, 573147844013817084091, 48558529144435440119720805669229197631, 538522340430300790495419781092981030523
Offset: 1

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Author

Keywords

Comments

Generated by k= 7, 8, 11, 13, 14, 16, 29, 37, 53, 86, 101, 182, 187, 221,...

Crossrefs

Programs

  • Mathematica
    Clear[lst,a,f,n,p]; a=10;lst={};Do[f=Fibonacci[n];If[PrimeQ[p=f-a]&&p> 1,AppendTo[lst,p]],{n,3*6!}];lst
    Select[Fibonacci[Range[7,200]]-10,PrimeQ] (* Harvey P. Dale, Feb 17 2020 *)

Formula

{A000045(k) : A000045(k)-10 in A000040}.

Extensions

Definition rephrased by R. J. Mathar, Aug 12 2009
Showing 1-6 of 6 results.