G.f. A(x) satisfies A(x) = 1/( (1-x)^2 * (1 - x*A(x) - x^2*A'(x)) ).
A386229
G.f. A(x) satisfies A(x) = 1/( (1-x)^2 * (1 - x*A(x) - x^2*A'(x)) ).
Terms
- a(0) =1a(1) =3a(2) =12a(3) =70a(4) =535a(5) =4908a(6) =51478a(7) =600584a(8) =7662285a(9) =105684465a(10) =1563183259a(11) =24645719004a(12) =412279514088
External references
- oeis: A386229