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.

A162591 Primes in A007781.

Original entry on oeis.org

3, 23, 229, 776887, 275311670611, 808793517812627212561, 47962816398523117606189726043968411848519304708598059350620557763277694737755820158580941773369740112983781265183299561695077810144494290292906506606685128216915382107158604900927276535058149770652889252352435564631
Offset: 1

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Author

Keywords

Comments

See A072164 for a condensed representation of the same information.

Examples

			3^3-2^2=27-4=23 is prime and enters the list.
		

Crossrefs

Cf. A068955.

Programs

  • Mathematica
    f[n_]:=n^n-(n-1)^(n-1); lst={};Do[If[PrimeQ[f[n]],AppendTo[lst,f[n]]], {n,2,5!}];lst

Extensions

Definition simplified, reference to A072164 and A068955 added by R. J. Mathar, Aug 11 2009