A135685 - cp's OEIS frontend

A135685 Triangular sequence of the coefficients of the numerator of the rational recursive sequence for tan(n*y) with x = tan(y).

n	a(n)
0	0
1	0
2	1
3	0
4	-2
5	0
6	-3
7	0
8	1
9	0
10	4
11	0
12	-4
13	0
14	5
15	0
16	-10
17	0
18	1
19	0
20	-6
21	0
22	20
23	0
24	-6
25	0
26	-7
27	0
28	35
29	0
30	-21
31	0
32	1
33	0
34	8
35	0
36	-56
37	0
38	56
39	0
40	-8
41	0
42	9
43	0
44	-84
45	0
46	126
47	0
48	-36
49	0
50	1
51	0
52	-10
53	0
54	120
55	0
56	-252
57	0
58	120
59	0
60	-10
61	0
62	-11
63	0
64	165
65	0
66	-462
67	0
68	330
69	0
70	-55
71	0
72	1

[0, 0, 1, 0, -2, 0, -3, 0, 1, 0, 4, 0, -4, 0, 5, 0, -10, 0, 1, 0, -6, 0, 20, 0, -6, 0, -7, 0, 35, 0, -21, 0, 1, 0, 8, 0, -56, 0, 56, 0, -8, 0, 9, 0, -84, 0, 126, 0, -36, 0, 1, 0, -10, 0, 120, 0, -252, 0, 120, 0, -10, 0, -11, 0, 165, 0, -462, 0, 330, 0, -55, 0, 1]

cp's OEIS Frontend

A135685 Triangular sequence of the coefficients of the numerator of the rational recursive sequence for tan(n*y) with x = tan(y).

Table of values

List of values