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.

A217750 Number of tetragonal regions in the exterior of a regular n-gon with all diagonals drawn.

Table of values

n a(n)
3 0
4 0
5 0
6 0
7 0
8 0
9 18
10 50
11 88
12 156
13 260
14 392
15 555
16 848
17 1088

List of values

[0, 0, 0, 0, 0, 0, 18, 50, 88, 156, 260, 392, 555, 848, 1088]