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.

A331932 Triangle read by rows: Take a hexagon with all diagonals drawn, as in A331931. Then T(n,k) = number of k-sided polygons in that figure for k = 3, 4, ..., n+4.

Table of values

n a(n)
1 18
2 6
3 0
4 264
5 108
6 36
7 0
8 1344
9 654
10 252
11 12
12 6
13 4164
14 2772
15 1020
16 228
17 24
18 0
19 10038
20 7758
21 2424
22 516
23 72
24 24
25 0
26 21108
27 16188
28 6060
29 1128
30 156
31 0
32 0
33 0
34 39690
35 32022
36 13368
37 3654
38 432
39 48
40 0
41 0
42 0
43 68052
44 56616
45 22980
46 6084
47 888
48 120
49 12
50 0
51 0
52 0

List of values

[18, 6, 0, 264, 108, 36, 0, 1344, 654, 252, 12, 6, 4164, 2772, 1020, 228, 24, 0, 10038, 7758, 2424, 516, 72, 24, 0, 21108, 16188, 6060, 1128, 156, 0, 0, 0, 39690, 32022, 13368, 3654, 432, 48, 0, 0, 0, 68052, 56616, 22980, 6084, 888, 120, 12, 0, 0, 0]