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.

A277443 Square array A(n,k) (n>=1, k>=1) read by antidiagonals: A(n,k) is the number of n-colorings of the prism graph Y_k on 2k vertices.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 2
6 0
7 0
8 0
9 18
10 0
11 0
12 2
13 12
14 84
15 0
16 0
17 0
18 114
19 264
20 260
21 0
22 0
23 2
24 180
25 2652
26 1920
27 630
28 0
29 0
30 0
31 858
32 16080
33 29660
34 8520
35 1302
36 0
37 0
38 2
39 1932
40 119844
41 367080
42 198030
43 28140
44 2408
45 0
46 0
47 0
48 7074
49 816984
50 4843460
51 4067280
52 932862
53 76272
54 4104
55 0
56 0
57 2
58 18660
59 5784492
60 62682480
61 85847910
62 28576380
63 3440024
64 179424
65 6570
66 0

List of values

[0, 0, 0, 0, 2, 0, 0, 0, 18, 0, 0, 2, 12, 84, 0, 0, 0, 114, 264, 260, 0, 0, 2, 180, 2652, 1920, 630, 0, 0, 0, 858, 16080, 29660, 8520, 1302, 0, 0, 2, 1932, 119844, 367080, 198030, 28140, 2408, 0, 0, 0, 7074, 816984, 4843460, 4067280, 932862, 76272, 4104, 0, 0, 2, 18660, 5784492, 62682480, 85847910, 28576380, 3440024, 179424, 6570, 0]