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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.

A327728 Number of unlabeled multigraphs with loops allowed and n edges covering three vertices.

Table of values

n a(n)
1 0
2 2
3 8
4 19
5 40
6 77
7 132
8 217
9 340
10 510
11 742
12 1054
13 1456
14 1976
15 2634
16 3453
17 4464
18 5703
19 7194
20 8987
21 11120
22 13636
23 16588
24 20036
25 24024
26 28630
27 33916
28 39951
29 46816
30 54601
31 63376
32 73253
33 84324
34 96690
35 110466
36 125778
37 142728
38 161468
39 182126
40 204841
41 229768
42 257075
43 286902
44 319447
45 354880
46 393384

List of values

[0, 2, 8, 19, 40, 77, 132, 217, 340, 510, 742, 1054, 1456, 1976, 2634, 3453, 4464, 5703, 7194, 8987, 11120, 13636, 16588, 20036, 24024, 28630, 33916, 39951, 46816, 54601, 63376, 73253, 84324, 96690, 110466, 125778, 142728, 161468, 182126, 204841, 229768, 257075, 286902, 319447, 354880, 393384]

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

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