A021139 Decimal expansion of 1/135.

0, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7, 4, 0, 7

Offset

0,3

Links

Table of n, a(n) for n=0..98.

Formula

a(n) = (1/9)*{20*(n mod 3)-10*[(n+1) mod 3]+23*[(n+2) mod 3]}-4*[C(2*n,n) mod 2]. [Paolo P. Lava, Sep 21 2009]

Mathematica

PadLeft[First@ #, Abs@ Last@ # + Length@ First@ #] &@ RealDigits[N[1/135, 120]] (* Bruno Berselli, Jun 21 2016 *)

Crossrefs

Sequence in context: A093825 A229784 A091494 * A020790 A199955 A196624

Adjacent sequences: A021136 A021137 A021138 * A021140 A021141 A021142

Keyword

nonn,cons,easy

Author

N. J. A. Sloane.

Status

approved