

A130422


Numbers n such that 4^n == 3 (mod n).


4




OFFSET

1,2


COMMENTS

No other terms below 10^15.
222775558403218644781528238995676668723498240827403019 belongs to this sequence.  Max Alekseyev, Jul 03 2014


LINKS

Table of n, a(n) for n=1..9.
M. Miller, Digraph covering and its application to two optimization problems for digraphs, Australasian Journal of Combinatorics, 3 (1991), pp. 151164.


PROG

(PARI) for (n=1, 10^33, if ( Mod(4, n)^n==3, print1(n, ", "))); /* Joerg Arndt, Jun 09 2012 */


CROSSREFS

Cf. A130421.
Sequence in context: A253981 A191819 A015071 * A022235 A234225 A110598
Adjacent sequences: A130419 A130420 A130421 * A130423 A130424 A130425


KEYWORD

nonn,more


AUTHOR

Jon E. Schoenfield, May 26 2007


EXTENSIONS

a(6) from Jon E. Schoenfield, Sep 30 2013
a(7) from Jared Polzer, Oct 03 2013
a(8)a(9) from Max Alekseyev, Jul 03 2014


STATUS

approved



