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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.

A345248 Number of labeled connected simple graphs on n vertices without cycles of length 4.

Table of values

n a(n)
1 1
2 1
3 4
4 28
5 302
6 4776
7 106732
8 3249352
9 131290812
10 6922560160
11 470586936176
12 40833342324864
13 4482709905772936
14 617622136930640128
15 106013904370382120400
16 22516967955697072408576
17 5880701545642715236590608
18 1877504184190590494772860928

List of values

[1, 1, 4, 28, 302, 4776, 106732, 3249352, 131290812, 6922560160, 470586936176, 40833342324864, 4482709905772936, 617622136930640128, 106013904370382120400, 22516967955697072408576, 5880701545642715236590608, 1877504184190590494772860928]

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

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