OFFSET
3,2
LINKS
Eric Weisstein's World of Mathematics, Cycle Complement Graph
Eric Weisstein's World of Mathematics, Minimal Dominating Set
Index entries for linear recurrences with constant coefficients, signature (3,-3,1).
FORMULA
a(n) = A000096(n-3) = n*(n-3)/2 for n > 6.
G.f.: x^3*(-1 - x + 4*x^2 - 7*x^3 + 8*x^4 - 6*x^5 + 2*x^6))/(-1 + x)^3.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Eric W. Weisstein, Sep 04 2021
STATUS
approved