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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.

A214581 Triangle read by rows: T(n,k) is the number of unordered pairs of nodes at distance k in the circumcoronene H(n) (n=1,2,3,4,5; see definition in the Klavzar papers).

Table of values

n a(n)
1 6
2 6
3 3
4 30
5 48
6 57
7 54
8 45
9 30
10 12
11 72
12 126
13 165
14 186
15 195
16 186
17 168
18 138
19 102
20 66
21 27
22 132
23 240
24 327
25 390
26 435
27 456
28 462
29 444
30 414
31 366
32 309
33 246
34 177
35 114
36 48
37 210
38 390
39 543
40 666
41 765
42 834
43 882
44 900
45 900
46 870
47 825
48 756
49 675
50 582
51 480
52 378
53 270
54 174
55 75

List of values

[6, 6, 3, 30, 48, 57, 54, 45, 30, 12, 72, 126, 165, 186, 195, 186, 168, 138, 102, 66, 27, 132, 240, 327, 390, 435, 456, 462, 444, 414, 366, 309, 246, 177, 114, 48, 210, 390, 543, 666, 765, 834, 882, 900, 900, 870, 825, 756, 675, 582, 480, 378, 270, 174, 75]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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