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.

A239156 Number of (3+1)X(n+1) 0..3 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..3 introduced in row major order.

Table of values

n a(n)
1 7
2 55
3 868
4 12159
5 175471
6 2519488
7 36221263
8 520615791
9 7483320292
10 107564015719
11 1546111034695
12 22223587182336
13 319438814614615
14 4591569914960743
15 65998599449004004
16 948654862324898319

List of values

[7, 55, 868, 12159, 175471, 2519488, 36221263, 520615791, 7483320292, 107564015719, 1546111034695, 22223587182336, 319438814614615, 4591569914960743, 65998599449004004, 948654862324898319]