cp's OEIS Frontend

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.

A374826 Place n equally spaced points on the circumference of a circle of radius r and then connect each pair of points with straight lines whose intersections create A007569(n) - n additional points. Draw a circle of radius r around each of the A007569(n) points. The sequence gives the total number of regions formed from all circle intersections.

Table of values

n a(n)
1 1
2 2
3 6
4 16
5 80
6 324
7 1666
8 3120
9 17703
10 28780
11 115401
12 96624
13 528073
14 589708

List of values

[1, 2, 6, 16, 80, 324, 1666, 3120, 17703, 28780, 115401, 96624, 528073, 589708]

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

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