OFFSET
4,1
LINKS
R. H. Hardin, Table of n, a(n) for n=4..500
Index entries for linear recurrences with constant coefficients, signature (2,-1,1,0,-1,1,-1).
FORMULA
G.f.: -x^4*(-13+4*x-6*x^2+3*x^3+6*x^4-4*x^5+8*x^6) / ( (x-1)*(x^6+x^4+x^3+x-1) ). - R. J. Mathar, Jan 19 2011
MATHEMATICA
LinearRecurrence[{2, -1, 1, 0, -1, 1, -1}, {13, 22, 37, 62, 103, 172, 286}, 40] (* Harvey P. Dale, Mar 12 2016 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. H. Hardin, Aug 14 2009
STATUS
approved