OFFSET
1,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
Index entries for linear recurrences with constant coefficients, signature (1,0,6,-6,0,-1,1).
FORMULA
G.f.: x^2*(95*x^5+73*x^4+95*x^3-425*x^2-219*x-145)/((x-1)*(x^6-6*x^3+1)). [Colin Barker, Aug 05 2012]
MATHEMATICA
LinearRecurrence[ {1, 0, 6, -6, 0, -1, 1}, {0, 145, 364, 789, 1564, 2805, 5260}, 40]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vladimir Joseph Stephan Orlovsky, Feb 14 2012
STATUS
approved