A122446 - cp's OEIS frontend

A122446 G.f. satisfies: A(x) = 1 + xA(x)^2 + 2x^2*(A(x)^2 - A(x)); equals the base sequence of pendular trinomial triangle A122445.

n	a(n)
0	1
1	1
2	2
3	7
4	24
5	88
6	336
7	1321
8	5316
9	21788
10	90640
11	381750
12	1624592
13	6975136
14	30177056
15	131428917
16	575765820
17	2535433668
18	11216757104
19	49829385786
20	222193501760
21	994153952528
22	4461915817760
23	20082611971226
24	90625360612296

[1, 1, 2, 7, 24, 88, 336, 1321, 5316, 21788, 90640, 381750, 1624592, 6975136, 30177056, 131428917, 575765820, 2535433668, 11216757104, 49829385786, 222193501760, 994153952528, 4461915817760, 20082611971226, 90625360612296]

cp's OEIS Frontend

A122446 G.f. satisfies: A(x) = 1 + xA(x)^2 + 2x^2*(A(x)^2 - A(x)); equals the base sequence of pendular trinomial triangle A122445.

Table of values

List of values

cp's OEIS Frontend

A122446 G.f. satisfies: A(x) = 1 + x*A(x)^2 + 2*x^2*(A(x)^2 - A(x)); equals the base sequence of pendular trinomial triangle A122445.

Table of values

List of values

A122446 G.f. satisfies: A(x) = 1 + xA(x)^2 + 2x^2*(A(x)^2 - A(x)); equals the base sequence of pendular trinomial triangle A122445.