A138998 9^n mod 2^n.

0, 1, 1, 1, 1, 9, 49, 121, 65, 329, 913, 25, 2273, 8169, 16177, 30905, 16001, 12937, 116433, 523609, 1042465, 2042153, 1602161, 6030841, 12334529, 10347465, 26018321, 32838297, 27109217, 512418409, 316798385, 703701817, 2038349057, 1165272329, 10487450961

Offset: 0

Author

N. J. A. Sloane, May 20 2008

Keywords

• nonn

Links

• G. C. Greubel, Table of n, a(n) for n = 0..1000

Programs

Mathematica

Table[Mod[9^n, 2^n], {n,0,50}] (* G. C. Greubel, Feb 18 2017 *)