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.

A125851 Number of points in a hexagonal lattice covered by a circular disk of diameter n if the center of the circle is chosen such that the disk covers the minimum possible number of lattice points.

Table of values

n a(n)
1 0
2 3
3 6
4 12
5 19
6 30
7 40
8 54
9 69
10 87
11 102
12 123
13 149
14 174
15 198
16 225
17 253
18 287
19 313
20 354
21 396
22 435

List of values

[0, 3, 6, 12, 19, 30, 40, 54, 69, 87, 102, 123, 149, 174, 198, 225, 253, 287, 313, 354, 396, 435]

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

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