Triangle of coefficients, read by rows, where T(n,k) is the coefficient of x^n*y^k in f(x,y) that satisfies f(x,y) = 1/(1-x) - x^2/(1-x)^2 + xy*f(x,y)^2.
A086610
Triangle of coefficients, read by rows, where T(n,k) is the coefficient of x^n*y^k in f(x,y) that satisfies f(x,y) = 1/(1-x) - x^2/(1-x)^2 + xy*f(x,y)^2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =0a(4) =2a(5) =2a(6) =-1a(7) =1a(8) =6a(9) =5a(10) =-2a(11) =-2a(12) =6a(13) =20a(14) =14a(15) =-3a(16) =-6a(17) =-4a(18) =30a(19) =70a(20) =42a(21) =-4a(22) =-10a(23) =-24a(24) =0a(25) =140a(26) =252a(27) =132a(28) =-5a(29) =-13
External references
- oeis: A086610