G.f. A(x) satisfies A097191(x*A(x)) = A(x) and so equals the ratio of the g.f.s of any two adjacent diagonals of triangle A097190.

A097193

G.f. A(x) satisfies A097191(x*A(x)) = A(x) and so equals the ratio of the g.f.s of any two adjacent diagonals of triangle A097190.

Terms

    a(0) =1a(1) =12a(2) =204a(3) =3978a(4) =83538a(5) =1837836a(6) =41745132a(7) =970574319a(8) =22970258883a(9) =551286213192

External references