A127391 - cp's OEIS frontend

A127391 Series expansion of the elliptic function sqrt(k) = theta_2/theta_3 in powers of q^(1/4).

n	a(n)
0	0
1	2
2	0
3	0
4	0
5	-4
6	0
7	0
8	0
9	10
10	0
11	0
12	0
13	-20
14	0
15	0
16	0
17	36
18	0
19	0
20	0
21	-64
22	0
23	0
24	0
25	110
26	0
27	0
28	0
29	-180
30	0
31	0
32	0
33	288
34	0
35	0
36	0
37	-452
38	0
39	0
40	0
41	692
42	0
43	0
44	0
45	-1044
46	0
47	0
48	0
49	1554
50	0
51	0
52	0
53	-2276
54	0
55	0
56	0
57	3296
58	0
59	0
60	0
61	-4724
62	0
63	0
64	0
65	6696
66	0
67	0
68	0
69	-9408
70	0
71	0
72	0
73	13108
74	0
75	0
76	0
77	-18112
78	0
79	0
80	0
81	24850
82	0

[0, 2, 0, 0, 0, -4, 0, 0, 0, 10, 0, 0, 0, -20, 0, 0, 0, 36, 0, 0, 0, -64, 0, 0, 0, 110, 0, 0, 0, -180, 0, 0, 0, 288, 0, 0, 0, -452, 0, 0, 0, 692, 0, 0, 0, -1044, 0, 0, 0, 1554, 0, 0, 0, -2276, 0, 0, 0, 3296, 0, 0, 0, -4724, 0, 0, 0, 6696, 0, 0, 0, -9408, 0, 0, 0, 13108, 0, 0, 0, -18112, 0, 0, 0, 24850, 0]

cp's OEIS Frontend

A127391 Series expansion of the elliptic function sqrt(k) = theta_2/theta_3 in powers of q^(1/4).

Table of values

List of values