1383243

Appears in sequences

• O.g.f.: 1/(1 - C(1)x/(1 - C(2)x/(1 - C(3)x/(1 - C(4)x/(1 - C(5)x/(1 - C(6)x/(1 -...))))))), a continued fraction, where C(n) are the Catalan numbers A000108.at n=6A268646
• a(0) = 1; a(n) = Sum_{k=0..floor(n/3)} binomial(n-2*k,k) * a(k).at n=33A352039