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.

A290580 E.g.f. W = W(x,m) satisfies: W = E(x*W,m) where E(x,m) = cn(i*x,m) - i*sn(i*x,m), with sn(x,m) and cn(x,m) being Jacobi elliptic functions, read as an irregular triangle of coefficients T(n,k) of x^n*m^k for n>=0 and k=0..[n/2].

Table of values

n a(n)
0 1
1 1
2 3
3 0
4 16
5 1
6 125
7 20
8 0
9 1296
10 364
11 1
12 16807
13 7028
14 112
15 0
16 262144
17 148752
18 5868
19 1
20 4782969
21 3471192
22 250128
23 576
24 0
25 100000000
26 89097664
27 10020912
28 82408
29 1
30 2357947691
31 2503362488
32 399379728
33 7354688
34 2816
35 0
36 61917364224
37 76575071488
38 16255733440
39 533661360
40 1066552
41 1
42 1792160394037
43 2536513162508
44 684615750832
45 35063521792
46 194025728
47 13312
48 0
49 56693912375296
50 90532686154752
51 30031767680256
52 2200207121408
53 24852054816
54 13053492
55 1
56 1946195068359375
57 3465845396598540
58 1376568893633760
59 135791393602560
60 2630843800320
61 4759188480
62 61440
63 0

List of values

[1, 1, 3, 0, 16, 1, 125, 20, 0, 1296, 364, 1, 16807, 7028, 112, 0, 262144, 148752, 5868, 1, 4782969, 3471192, 250128, 576, 0, 100000000, 89097664, 10020912, 82408, 1, 2357947691, 2503362488, 399379728, 7354688, 2816, 0, 61917364224, 76575071488, 16255733440, 533661360, 1066552, 1, 1792160394037, 2536513162508, 684615750832, 35063521792, 194025728, 13312, 0, 56693912375296, 90532686154752, 30031767680256, 2200207121408, 24852054816, 13053492, 1, 1946195068359375, 3465845396598540, 1376568893633760, 135791393602560, 2630843800320, 4759188480, 61440, 0]