OFFSET
0,2
COMMENTS
Binomial transform of A053156.
LINKS
Index entries for linear recurrences with constant coefficients, signature (9, -26, 24).
FORMULA
a(n) = (3*4^n - 2*3^n + 2^n)/2.
G.f.: (1-5x+7x^2)/(2(1-2x)(1-3x)(1-4x)).
E.g.f.: (3*exp(4x) - 2*exp(3x) + exp(2x))/2.
MATHEMATICA
Table[(3 4^n-2 3^n+2^n)/2, {n, 0, 30}] (* Harvey P. Dale, Mar 14 2011 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 27 2003
STATUS
approved