OFFSET
0,2
LINKS
FORMULA
G.f.: (1-4*x)/(1 - 7*x + 6*x^2).
a(n) = Sum_{k=0..n} A147703(n,k)*2^(n-k).
a(n) = (1/5)*(3 + 2*6^n), with n>=0. - Paolo P. Lava, Dec 12 2008
E.g.f.: exp(x)*(3 + 2*exp(5*x))/5. - Stefano Spezia, Sep 30 2023
MATHEMATICA
Table[MatrixPower[{{3, 2}, {3, 4}}, n][[1]][[1]], {n, 0, 44}] (* Vladimir Joseph Stephan Orlovsky, Feb 20 2010 *)
LinearRecurrence[{7, -6}, {1, 3}, 30] (* Harvey P. Dale, Jul 27 2021 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Dec 09 2008
EXTENSIONS
a(21)-a(23) from Stefano Spezia, Sep 30 2023
STATUS
approved