OFFSET
0,2
COMMENTS
A131246 is a companion sequence.
LINKS
Index entries for linear recurrences with constant coefficients, signature (2,2,-3,-1).
FORMULA
G.f. ( 1+x-x^3-2*x^2 ) / ( 1-2*x-2*x^2+3*x^3+x^4 ). - R. J. Mathar, Jan 29 2011
EXAMPLE
a(4) = 30 = sum of row 4 terms of A131243: (8 + 7 + 10 + 4 + 1).
MAPLE
PROG
(PARI) Vec((1+x-x^3-2*x^2)/(1-2*x-2*x^2+3*x^3+x^4)+O(x^99)) \\ Charles R Greathouse IV, Jun 12 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Gary W. Adamson, Jun 22 2007
STATUS
approved