OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (8,-24,32,-16).
FORMULA
G.f.: (1+2x-x^2-x^3+x^4)/(1-2x)^4.
a(n) = A165241(n+3,3).
a(n) = 2^n*(n+3)*(3*n+2)*(3*n+5)/32 for n>0. - Bruno Berselli, Dec 21 2011
MATHEMATICA
LinearRecurrence[{8, -24, 32, -16}, {1, 10, 55, 231, 833}, 30] (* Harvey P. Dale, Dec 04 2018 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Dec 20 2011
STATUS
approved