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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.

A001437 Number of connected graphs with n nodes and ceiling(n(n-1)/4) edges.

Table of values

n a(n)
2 1
3 1
4 2
5 5
6 22
7 138
8 1579
9 33366
10 1348674
11 105925685
12 15968704512
13 4520384306832
14 2402814904220039
15 2425664021535713098
16 4647586298937784001491
17 16787189663016572148130262
18 114716901953374968257425111039

List of values

[1, 1, 2, 5, 22, 138, 1579, 33366, 1348674, 105925685, 15968704512, 4520384306832, 2402814904220039, 2425664021535713098, 4647586298937784001491, 16787189663016572148130262, 114716901953374968257425111039]

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

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