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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A242240 Expansion of Jacobi sn(x, 1/2) / cd(x, 1/2).

Table of values

n a(n)
0 0
1 1
2 0
3 0
4 0
5 12
6 0
7 0
8 0
9 3024
10 0
11 0
12 0
13 4390848
14 0
15 0
16 0
17 21224560896
18 0
19 0
20 0
21 257991277243392
22 0
23 0
24 0
25 6628234834692624384
26 0
27 0
28 0
29 319729080846260095008768
30 0
31 0
32 0
33 26571747463798134334265819136
34 0
35 0
36 0
37 3564202847752289659513902717468672
38 0
39 0
40 0

List of values

[0, 1, 0, 0, 0, 12, 0, 0, 0, 3024, 0, 0, 0, 4390848, 0, 0, 0, 21224560896, 0, 0, 0, 257991277243392, 0, 0, 0, 6628234834692624384, 0, 0, 0, 319729080846260095008768, 0, 0, 0, 26571747463798134334265819136, 0, 0, 0, 3564202847752289659513902717468672, 0, 0, 0]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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