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.

A274777 Irregular triangle read by rows: T(n,k) = number of arrangements of n circles in the affine plane forming k regions, excluding the regions that do not belong to the circles.

Table of values

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

List of values

[1, 0, 2, 1, 0, 0, 4, 4, 2, 1, 3, 0, 0, 0]