0,2

Equivalently, result of applying same transformation 4 times to g.f. for Catalan numbers A000108.

G.f.: -(4*t-1+(-4*t+1)^(1/2))/(6*t^2-5*t+(-4*t+1)^(1/2)*t+1-(-4*t+1)^(1/2)).

Cf. A000108, A014137, A024718.

Adjacent sequences: A073522 A073523 A073524 this_sequence A073526 A073527 A073528

Sequence in context: A107590 A007581 A124303 this_sequence A007317 A132018 A108307

nonn

njas, Aug 30 2002