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.

A385162 Place a point on the integer coordinates, up to |n|, along all four axial directions on a Cartesian plane, and then join a circle through every unordered triple of non-collinear points: a(n) is the number of distinct (curved) edges formed from the intersections of the circles.

Table of values

n a(n)
1 4
2 184
3 8956
4 79272
5 455664
6 1420624
7 4576632

List of values

[4, 184, 8956, 79272, 455664, 1420624, 4576632]

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

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