OFFSET
0,2
COMMENTS
An alternating sum of decreasing powers.
Binomial transform of A083325.
LINKS
Index entries for linear recurrences with constant coefficients, signature (15,-74,120).
FORMULA
G.f.: (1-10*x+26*x^2)/((1-4*x)*(1-5*x)*(1-6*x)).
E.g.f.: exp(6x) - exp(5x) + exp(4x).
MAPLE
MATHEMATICA
Table[6^n-5^n+4^n, {n, 0, 20}] (* Harvey P. Dale, Feb 19 2013 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 27 2003
STATUS
approved