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 1-2 of 2 results.

A162928 Primes of the form A056788(k)-2.

Original entry on oeis.org

3, 29, 281, 870197, 311791207040507
Offset: 1

Views

Author

Vladimir Joseph Stephan Orlovsky, Jul 17 2009

Keywords

Comments

The term a(6) has 291 digits.

Examples

			a(1)=A056788(2)-2=3. a(2)=A056788(3)-2=29, associated with k=2, 3, 4, 7, 13, 136,....

Crossrefs

Cf. A162927, A056788

Programs

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

Extensions

Edited by R. J. Mathar, Jul 19 2009

A162929 Primes of the form n^n+(n+1)^(n+1)+6.

Original entry on oeis.org

11, 37, 49787, 404197711
Offset: 1

Views

Author

Vladimir Joseph Stephan Orlovsky, Jul 17 2009

Keywords

Comments

Primes of the form A056788(k)+6, associated with k=2, 3, 6, 9, 126,...
The term a(5) has 265 digits.

Examples

			2^2+3^3+6=37.

Crossrefs

Cf. A162927, A056788

Programs

  • Mathematica
    f[n_]:=n^n+(n+1)^(n+1)+6; lst={};Do[If[PrimeQ[f[n]],AppendTo[lst,f[n]]], {n,2*5!}];lst
Select[Table[n^n+(n+1)^(n+1)+6,{n,500}],PrimeQ] (* Harvey P. Dale, Jan 30 2014 *)

Extensions

Edited by R. J. Mathar, Jul 19 2009
Showing 1-2 of 2 results.

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