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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.

A127404 Number of points in a honeycomb net covered by a circular disk of diameter n if the center of the circle is chosen at mid-edge between two grid points.

Table of values

n a(n)
1 2
2 2
3 6
4 10
5 16
6 20
7 34
8 36
9 50
10 58
11 72
12 86
13 106
14 116
15 138
16 154
17 176
18 190
19 222
20 234
21 270
22 292

List of values

[2, 2, 6, 10, 16, 20, 34, 36, 50, 58, 72, 86, 106, 116, 138, 154, 176, 190, 222, 234, 270, 292]

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

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