0,4

Generalization:

1/6 = sum (4^i/10^(i+1)), i >= 0,

1/96 = sum (4^i/100^(i+1)), i >= 0, (this sequence)

1/996 = sum (4^i/1000^(i+1)), i >= 0,

1/9996 = sum (4^i/1000^(i+1)), i >= 0, ... - Daniel Forgues, Oct 28 2011

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

Sequence in context: A011242 A008565 A205325 * A021028 A193529 A214561

Adjacent sequences: A021097 A021098 A021099 * A021101 A021102 A021103

nonn,cons

N. J. A. Sloane.

approved