G.f. A(x) satisfies: A(x) = F(x/A(x)) where A(x*F(x)) = F(x) = g.f. of A133053, which is the squares of Motzkin numbers (A001006).

A168594

G.f. A(x) satisfies: A(x) = F(x/A(x)) where A(x*F(x)) = F(x) = g.f. of A133053, which is the squares of Motzkin numbers (A001006).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =6a(4) =20a(5) =70a(6) =302a(7) =1386a(8) =6902a(9) =35862a(10) =194202a(11) =1082642a(12) =6191680a(13) =36141118a(14) =214715244a(15) =1294849186a(16) =7911159522a(17) =48888093910a(18) =305165808290

External references