A066298 a(n) = googol (mod n).

0, 0, 1, 0, 0, 4, 4, 0, 1, 0, 1, 4, 3, 4, 10, 0, 4, 10, 9, 0, 4, 12, 13, 16, 0, 16, 10, 4, 16, 10, 5, 0, 1, 4, 25, 28, 10, 28, 16, 0, 1, 4, 31, 12, 10, 36, 27, 16, 11, 0, 4, 16, 28, 10, 45, 32, 28, 16, 16, 40, 47, 36, 46, 0, 55, 34, 10, 4, 13, 60, 20, 64, 72, 10, 25, 28, 67, 16, 67, 0

Offset: 1

Author

Eric W. Weisstein

Keywords

• nonn

Comments

A googol is 10^100.

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..10000 (first 1000 terms from Harry J. Smith)
• Eric Weisstein's World of Mathematics, Googol

Crossrefs

Cf. A067007.

Programs

Maple

a:= n-> 10&^100 mod n:
seq(a(n), n=1..100);  # Alois P. Heinz, Feb 07 2018

Mathematica

Table[PowerMod[10, 100, n], {n, 2, 50}]

PARI

{ g=10^100; for (n=1, 1000, write("b066298.txt", n, " ", g%n) ) } \\ Harry J. Smith, Feb 09 2010

PARI

a(n) = lift(Mod(10, n)^100); \\ Michel Marcus, Feb 07 2018