cp's OEIS Frontend

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.

A319145 E.g.f. A = A(x,m) satisfies: cn(A + x, m) + sn(A - x, m) = 1, where sn(x,m) and cn(x,m) are Jacobi elliptic functions with parameter m, as an irregular triangle of coefficients read by rows.

Table of values

n a(n)
1 1
2 4
3 24
4 0
5 224
6 -64
7 2880
8 -1920
9 0
10 48064
11 -49984
12 1024
13 989184
14 -1365504
15 129024
16 0
17 24218624
18 -40854528
19 8583168
20 -16384
21 687083520
22 -1352540160
23 471859200
24 -8355840
25 0
26 22151148544
27 -49507063808
28 24589796352
29 -1331806208
30 262144
31 799546834944
32 -1993321955328
33 1286051069952
34 -141582532608
35 536346624
36 0
37 31934834253824
38 -87721489006592
39 69349000355840
40 -12549922078720
41 198078103552
42 -4194304

List of values

[1, 4, 24, 0, 224, -64, 2880, -1920, 0, 48064, -49984, 1024, 989184, -1365504, 129024, 0, 24218624, -40854528, 8583168, -16384, 687083520, -1352540160, 471859200, -8355840, 0, 22151148544, -49507063808, 24589796352, -1331806208, 262144, 799546834944, -1993321955328, 1286051069952, -141582532608, 536346624, 0, 31934834253824, -87721489006592, 69349000355840, -12549922078720, 198078103552, -4194304]