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.

A303489 Square array A(n,k), n >= 0, k >= 1, read by antidiagonals: A(n,k) = n! * [x^n] 1/(1 - k*x)^(n/k).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 6
6 1
7 1
8 8
9 60
10 1
11 1
12 10
13 105
14 840
15 1
16 1
17 12
18 162
19 1920
20 15120
21 1
22 1
23 14
24 231
25 3640
26 45045
27 332640
28 1
29 1
30 16
31 312
32 6144
33 104720
34 1290240
35 8648640
36 1
37 1
38 18
39 405
40 9576
41 208845
42 3674160
43 43648605
44 259459200
45 1
46 1
47 20
48 510
49 14080
50 375000
51 8648640
52 152152000
53 1703116800
54 8821612800

List of values

[1, 1, 1, 1, 1, 6, 1, 1, 8, 60, 1, 1, 10, 105, 840, 1, 1, 12, 162, 1920, 15120, 1, 1, 14, 231, 3640, 45045, 332640, 1, 1, 16, 312, 6144, 104720, 1290240, 8648640, 1, 1, 18, 405, 9576, 208845, 3674160, 43648605, 259459200, 1, 1, 20, 510, 14080, 375000, 8648640, 152152000, 1703116800, 8821612800]