A259867 Exponent of 2 modulo the prime A056807(n).

5, 1500, 234375, 300000000, 7500000000000000000000000000, 750000000000000000000000000000000000, 1500000000000000000000000000000000000000000000000000000000000000000

Offset

1,1

Links

Table of n, a(n) for n=1..7.

S. W. Golomb, Properties of the sequence 3.2^n+1, Math. Comp., 30 (1976), 657-663.

S. W. Golomb, Properties of the sequence 3.2^n+1, Math. Comp., 30 (1976), 657-663. [Annotated scanned copy]

Maple

A259867 := proc(n)
    p := 3*10^A056807(n)+1 ;
    numtheory[order](2, p) ;
end proc: # R. J. Mathar, Jul 15 2015

Crossrefs

Cf. A056807.

Sequence in context: A317070 A316951 A317731 * A169620 A181992 A145694

Adjacent sequences: A259864 A259865 A259866 * A259868 A259869 A259870

Keyword

nonn

Author

N. J. A. Sloane, Jul 08 2015

Status

approved