OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 251
FORMULA
G.f.: 1/(1-x)^2/(1-x^2)/(1-x^6)/(1-x^12)/(1-x^24)/(1-x^48)/(1-x^60).
MATHEMATICA
CoefficientList[Series[1/(1-x)^2/(1-x^2)/(1-x^6)/(1-x^12)/(1-x^24)/(1-x^48)/(1-x^60), {x, 0, 1003}], x] (* Vincenzo Librandi, Feb 24 2012 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved