G.f. satisfies: A(x,y) = 1 + Sum_{n>=1} x^n*y*A(x,y)^n/(1 - y*A(x,y)^(2*n)), where A(x,y) = 1 + Sum_{n>=1,k>=1} T(n,k)*x^n*y^k; here the coefficients T(n,k) form a square array and are read by antidiagonals.
A192404
G.f. satisfies: A(x,y) = 1 + Sum_{n>=1} x^n*y*A(x,y)^n/(1 - y*A(x,y)^(2*n)), where A(x,y) = 1 + Sum_{n>=1,k>=1} T(n,k)*x^n*y^k; here the coefficients T(n,k) form a square array and are read by antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =5a(9) =1a(10) =1a(11) =7a(12) =14a(13) =10a(14) =1a(15) =1a(16) =11a(17) =31a(18) =38a(19) =17a(20) =1a(21) =1a(22) =16a(23) =61a(24) =114a(25) =91a(26) =26a(27) =1a(28) =1a(29) =22
External references
- oeis: A192404