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.

A277444 Square array A(n,k) (n>=1, k>=1) read by antidiagonals: A(n,k) is the number of n-colorings of the Möbius ladder M_k on 2k vertices.

Table of values

n a(n)
1 0
2 0
3 2
4 0
5 0
6 6
7 0
8 2
9 0
10 12
11 0
12 0
13 42
14 24
15 20
16 0
17 2
18 48
19 420
20 120
21 30
22 0
23 0
24 306
25 2160
26 2420
27 360
28 42
29 0
30 2
31 600
32 17532
33 27600
34 9750
35 840
36 56
37 0
38 0
39 2442
40 115464
41 375260
42 191760
43 30702
44 1680
45 72
46 0
47 2
48 6048
49 830100
50 4810680
51 4098510
52 917280
53 81032
54 3024
55 90
56 0
57 0
58 20706
59 5745120
60 62813540
61 85691640
62 28669662
63 3406368
64 187560
65 5040
66 110

List of values

[0, 0, 2, 0, 0, 6, 0, 2, 0, 12, 0, 0, 42, 24, 20, 0, 2, 48, 420, 120, 30, 0, 0, 306, 2160, 2420, 360, 42, 0, 2, 600, 17532, 27600, 9750, 840, 56, 0, 0, 2442, 115464, 375260, 191760, 30702, 1680, 72, 0, 2, 6048, 830100, 4810680, 4098510, 917280, 81032, 3024, 90, 0, 0, 20706, 5745120, 62813540, 85691640, 28669662, 3406368, 187560, 5040, 110]