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.

A257594 Consider the hexagonal lattice packing of circles; a(n) is the maximal number of circles that can be enclosed by a closed chain of n circles.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 0
6 1
7 1
8 2
9 3
10 4
11 5
12 7
13 8
14 10

List of values

[0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 7, 8, 10]