A067007 a(n) = googolplex (mod n).

0, 0, 1, 0, 0, 4, 4, 0, 1, 0, 1, 4, 3, 4, 10, 0, 1, 10, 9, 0, 4, 12, 13, 16, 0, 16, 10, 4, 24, 10, 5, 0, 1, 18, 25, 28, 10, 28, 16, 0, 1, 4, 24, 12, 10, 36, 9, 16, 4, 0, 1, 16, 46, 10, 45, 32, 28, 24, 48, 40, 47, 36, 46, 0, 55, 34, 10, 52, 13, 60, 45, 64, 1, 10, 25, 28, 67, 16, 52, 0

Offset

1,6

Comments

A googolplex is 10^(10^100). a(n) = 0 iff n = 2^a * 5^b, a, b >= 0 (A003592).

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Googolplex

Mathematica

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

Crossrefs

Cf. A066298.

Sequence in context: A075866 A202168 A156450 * A066298 A108068 A283998

Adjacent sequences: A067004 A067005 A067006 * A067008 A067009 A067010

Keyword

nonn

Author

Ed Pegg Jr, Nov 20 2002

Extensions

Edited by Robert G. Wilson v, Nov 23 2002

Status

approved