A115951 - cp's OEIS frontend

A115951 Expansion of 1/sqrt(1-4xy-4x^2y).

n	a(n)
0	1
1	0
2	2
3	0
4	2
5	6
6	0
7	0
8	12
9	20
10	0
11	0
12	6
13	60
14	70
15	0
16	0
17	0
18	60
19	280
20	252
21	0
22	0
23	0
24	20
25	420
26	1260
27	924
28	0
29	0
30	0
31	0
32	280
33	2520
34	5544
35	3432
36	0
37	0
38	0
39	0
40	70
41	2520
42	13860
43	24024
44	12870
45	0
46	0
47	0
48	0
49	0
50	1260
51	18480
52	72072
53	102960
54	48620
55	0
56	0
57	0
58	0
59	0
60	252
61	13860
62	120120
63	360360
64	437580
65	184756

[1, 0, 2, 0, 2, 6, 0, 0, 12, 20, 0, 0, 6, 60, 70, 0, 0, 0, 60, 280, 252, 0, 0, 0, 20, 420, 1260, 924, 0, 0, 0, 0, 280, 2520, 5544, 3432, 0, 0, 0, 0, 70, 2520, 13860, 24024, 12870, 0, 0, 0, 0, 0, 1260, 18480, 72072, 102960, 48620, 0, 0, 0, 0, 0, 252, 13860, 120120, 360360, 437580, 184756]

cp's OEIS Frontend

A115951 Expansion of 1/sqrt(1-4xy-4x^2y).

Table of values

List of values

cp's OEIS Frontend

A115951 Expansion of 1/sqrt(1-4*x*y-4*x^2*y).

Table of values

List of values

A115951 Expansion of 1/sqrt(1-4xy-4x^2y).