OFFSET
0,2
COMMENTS
Binomial transform of A152261. Tenth binomial transform of powers of 5 interleaved with zeros.
LINKS
FORMULA
a(n) = ((10+sqrt(5))^n+(10-sqrt(5))^n)/2.
G.f.: (1-10*x)/(1-20*x+95*x^2).
MATHEMATICA
LinearRecurrence[{20, -95}, {1, 10}, 20] (* Harvey P. Dale, Jul 08 2017 *)
PROG
(Magma) [ n le 2 select 9*n-8 else 20*Self(n-1)-95*Self(n-2): n in [1..18] ];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Klaus Brockhaus, Jul 22 2009
STATUS
approved