G.f. A(x) satisfies A(x) = 1/( 1 - x*A(x) / (1-x)^2 )^2.
A382918
G.f. A(x) satisfies A(x) = 1/( 1 - x*A(x) / (1-x)^2 )^2.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =64a(4) =401a(5) =2652a(6) =18241a(7) =129216a(8) =936469a(9) =6911238a(10) =51764834a(11) =392494366a(12) =3006851913a(13) =23238830982a(14) =180974578418
External references
- oeis: A382918