Antidiagonal sums of square table A089447, which lists the coefficients of x^n*y^k in f(x,y) that satisfies: f(x,y) = g(x,y) + xy*f(x,y)^4 and where g(x,y) satisfies: 1 + (x+y-1)*g(x,y) + xy*g(x,y)^2 = 0.

A089449

Antidiagonal sums of square table A089447, which lists the coefficients of x^n*y^k in f(x,y) that satisfies: f(x,y) = g(x,y) + xy*f(x,y)^4 and where g(x,y) satisfies: 1 + (x+y-1)*g(x,y) + xy*g(x,y)^2 = 0.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =22a(4) =90a(5) =396a(6) =1837a(7) =8870a(8) =44186a(9) =225628a(10) =1175322a(11) =6222788a(12) =33392644a(13) =181216728a(14) =992829379a(15) =5483790870a(16) =30502513970a(17) =170705626308a(18) =960498281302

External references