A089449 - cp's OEIS frontend

A089449 Antidiagonal sums of square table A089447, which lists the coefficients of x^ny^k in f(x,y) that satisfies: f(x,y) = g(x,y) + xyf(x,y)^4 and where g(x,y) satisfies: 1 + (x+y-1)g(x,y) + xyg(x,y)^2 = 0.

n	a(n)
0	1
1	2
2	6
3	22
4	90
5	396
6	1837
7	8870
8	44186
9	225628
10	1175322
11	6222788
12	33392644
13	181216728
14	992829379
15	5483790870
16	30502513970
17	170705626308
18	960498281302
19	5430200987260
20	30830681187480
21	175715526842056
22	1004931956037782

[1, 2, 6, 22, 90, 396, 1837, 8870, 44186, 225628, 1175322, 6222788, 33392644, 181216728, 992829379, 5483790870, 30502513970, 170705626308, 960498281302, 5430200987260, 30830681187480, 175715526842056, 1004931956037782]

cp's OEIS Frontend

A089449 Antidiagonal sums of square table A089447, which lists the coefficients of x^ny^k in f(x,y) that satisfies: f(x,y) = g(x,y) + xyf(x,y)^4 and where g(x,y) satisfies: 1 + (x+y-1)g(x,y) + xyg(x,y)^2 = 0.

Table of values

List of values

cp's OEIS Frontend

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.

Table of values

List of values

A089449 Antidiagonal sums of square table A089447, which lists the coefficients of x^ny^k in f(x,y) that satisfies: f(x,y) = g(x,y) + xyf(x,y)^4 and where g(x,y) satisfies: 1 + (x+y-1)g(x,y) + xyg(x,y)^2 = 0.