A104112 Decimal expansion of 42^42.

1, 5, 0, 1, 3, 0, 9, 3, 7, 5, 4, 5, 2, 9, 6, 5, 7, 2, 3, 5, 6, 7, 7, 1, 9, 7, 2, 1, 6, 4, 2, 5, 4, 4, 5, 7, 8, 1, 4, 0, 4, 7, 9, 7, 0, 5, 6, 8, 7, 3, 8, 7, 7, 7, 2, 3, 5, 8, 9, 3, 5, 3, 3, 0, 1, 6, 0, 6, 4

Offset

69,2

Comments

Let phi_n denote Euler's totient function iterated n times, then phi_n(42^42) = 2^(42+n) * 3^42 * 7^(42-n) for n = 1 to 42. The phi iteration can be repeated 3*42 times. 42^42/sum(all resulting phi values) = 2.49999999999999999999999118906...

Links

Table of n, a(n) for n=69..137.

Example

150130937545296572356771972164254457814047970568738777235893533016064.

Mathematica

IntegerDigits[42^42] (* Harvey P. Dale, Jun 04 2017 *)

Crossrefs

Sequence in context: A316568 A198927 A198100 * A115635 A019729 A261851

Adjacent sequences: A104109 A104110 A104111 * A104113 A104114 A104115

Keyword

cons,nonn

Author

Gerald McGarvey, Mar 04 2005

Status

approved