OFFSET
0,2
COMMENTS
Binomial transform of A083318
LINKS
Index entries for linear recurrences with constant coefficients, signature (9,-26,24).
FORMULA
a(n)=4^n+3^n-2^n.
G.f. (1-4x+2x^2)/((1-2x)(1-3x)(1-4x)).
E.g.f. exp(4x)+exp(3x)-exp(2x)
MATHEMATICA
CoefficientList[Series[(1-4x+2x^2)/((1-2x)(1-3x)(1-4x)), {x, 0, 40}], x] (* Harvey P. Dale, Mar 28 2011 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 25 2003
STATUS
approved