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.

A325220 E.g.f.: S(x,k) = -i * sn( i * Integral C(x,k) dx, k) such that C(x,k) = cn( i * Integral C(x,k) dx, k), where S(x,k) = Sum_{n>=0} Sum_{j=0..n} T(n,j) * x^(2*n+1)*k^(2*j)/(2*n+1)!, as a triangle of coefficients T(n,j) read by rows.

Table of values

n a(n)
0 1
1 2
2 1
3 16
4 28
5 1
6 272
7 1032
8 270
9 1
10 7936
11 52736
12 36096
13 2456
14 1
15 353792
16 3646208
17 4766048
18 1035088
19 22138
20 1
21 22368256
22 330545664
23 704357760
24 319830400
25 27426960
26 199284
27 1
28 1903757312
29 38188155904
30 120536980224
31 93989648000
32 18598875760
33 702812568
34 1793606
35 1
36 209865342976
37 5488365862912
38 24060789342208
39 28745874079744
40 10324483102720
41 1002968825344
42 17753262208
43 16142512
44 1
45 29088885112832
46 961530104709120
47 5590122715250688
48 9498855414644736
49 5416305638467584
50 1013356176688128
51 51882638754240
52 445736371872
53 145282674
54 1

List of values

[1, 2, 1, 16, 28, 1, 272, 1032, 270, 1, 7936, 52736, 36096, 2456, 1, 353792, 3646208, 4766048, 1035088, 22138, 1, 22368256, 330545664, 704357760, 319830400, 27426960, 199284, 1, 1903757312, 38188155904, 120536980224, 93989648000, 18598875760, 702812568, 1793606, 1, 209865342976, 5488365862912, 24060789342208, 28745874079744, 10324483102720, 1002968825344, 17753262208, 16142512, 1, 29088885112832, 961530104709120, 5590122715250688, 9498855414644736, 5416305638467584, 1013356176688128, 51882638754240, 445736371872, 145282674, 1]