A091883 Expansion of (1-5x)/((1+5x)(1-10x)).

1, 0, 50, 250, 3750, 31250, 343750, 3281250, 33593750, 332031250, 3339843750, 33300781250, 333496093750, 3332519531250, 33337402343750, 333312988281250, 3333435058593750, 33332824707031250, 333335876464843750

Offset: 0

Author

Paul Barry, Feb 10 2004

Keywords

• easy
• nonn

Comments

A091903(n)=a(n+1)/50. a(n)/a(n+1)->1/10.

Links

• Index entries for linear recurrences with constant coefficients, signature (5,50).

Formula

a(n)=10^n/3+2(-5)^n/3.

a(n) = 5^n*A078008(n). - R. J. Mathar, Mar 08 2021