0,2

G.f.: ( (1+x)/(1-x)/(1-6*x+x^2)*(1-x+(1-6*x+x^2)^(1/2))/2 )^(1/2).

(PARI) {a(n)=local(x=X+X*O(X^n)); polcoeff( ((1+x)/(1-x)/(1-6*x+x^2)*(1-x+(1-6*x+x^2)^(1/2))/2)^(1/2), n, X)}

Cf. A113281, A113282, A113284.

Sequence in context: A024335 A024336 A145144 this_sequence A127784 A112696 A132006

Adjacent sequences: A113280 A113281 A113282 this_sequence A113284 A113285 A113286

nonn

Paul D. Hanna (pauldhanna(AT)juno.com), Oct 22 2005