OFFSET
0,2
COMMENTS
2*a(n)/10^n = A000032(n). Fifth binomial transform of 1, 0, 125, 0, 15625, ...
LINKS
FORMULA
a(n) = (5 + 5*sqrt(5))^n/2 + (5 - 5*sqrt(5))^n/2.
MATHEMATICA
CoefficientList[Series[(1-5x)/(1-10x-100x^2), {x, 0, 30}], x] (* or *) LinearRecurrence[{10, 100}, {1, 5}, 30] (* Harvey P. Dale, Aug 27 2019 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 26 2004
STATUS
approved