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

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

Offset: 1

Author

N. J. A. Sloane, Jul 08 2015

Keywords

• nonn

Links

• 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]

Crossrefs

Cf. A056807.

Programs

Maple

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