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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.

A296620 Number of 4-regular (quartic) connected graphs on n nodes with diameter k written as irregular triangle T(n,k).

Table of values

n a(n)
5 1
6 0
7 1
8 0
9 2
10 0
11 6
12 0
13 16
14 0
15 24
16 35
17 0
18 37
19 227
20 1
21 0
22 26
23 1502
24 16
25 0
26 10
27 10561
28 202
29 5
30 0
31 1
32 84103
33 4006
34 58
35 0
36 1
37 722252
38 82726
39 493
40 19
41 0
42 0
43 6383913
44 1647078
45 6224
46 202
47 1
48 0
49 0
50 55831405
51 30291536
52 96504
53 2156
54 33

List of values

[1, 0, 1, 0, 2, 0, 6, 0, 16, 0, 24, 35, 0, 37, 227, 1, 0, 26, 1502, 16, 0, 10, 10561, 202, 5, 0, 1, 84103, 4006, 58, 0, 1, 722252, 82726, 493, 19, 0, 0, 6383913, 1647078, 6224, 202, 1, 0, 0, 55831405, 30291536, 96504, 2156, 33]

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

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