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.

A245728 Numbers k that divide 2^k + 6.

Original entry on oeis.org

1, 2, 10, 1030, 10009593662, 13957196317, 55299492770, 3764656723270
Offset: 1

Views

Author

Derek Orr, Jul 30 2014

Keywords

Comments

No other terms below 10^15. Some larger terms: 2962089521722084981, 1376243703434217460265762. - Max Alekseyev, Sep 23 2016

Examples

			2^10 + 6 = 1030 is divisible by 10. Thus 10 is a term of this sequence.
		

Crossrefs

Programs

  • Maple
    select(n -> 2 &^ n + 6 mod n = 0, [$1..10^6]); # Robert Israel, Jul 30 2014
  • Mathematica
    Select[Range[10^5], Divisible[2^# + 6, #] &] (* Robert Price, Oct 12 2018 *)
  • PARI
    for(n=1,10^9,if(Mod(2,n)^n==Mod(-6,n),print1(n,", ")))

Extensions

a(5) from Jason G. Wurtzel, Sep 25 2014
a(6)-a(8) from Max Alekseyev, Sep 23 2016