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.

A205587 Number of (n+1)X6 0..2 arrays with no 2X2 subblock having the same number of equal edges as its horizontal or vertical neighbors, and new values 0..2 introduced in row major order.

Table of values

n a(n)
1 12574
2 248940
3 6127845
4 147377704
5 3619876639
6 88339585116
7 2185708696857
8 53385992474116
9 1322383286558544
10 32335854186137718
11 800647385900917353
12 19592761418771490008
13 484877507851310339810
14 11872137202509501621294

List of values

[12574, 248940, 6127845, 147377704, 3619876639, 88339585116, 2185708696857, 53385992474116, 1322383286558544, 32335854186137718, 800647385900917353, 19592761418771490008, 484877507851310339810, 11872137202509501621294]