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.

A237571 Number of (n+1)X(3+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

Table of values

n a(n)
1 13924
2 315664
3 7379204
4 173478980
5 4093774632
6 95639726868
7 2255748816966
8 52746091216472
9 1244121688354740
10 29088796774026344
11 686098112079186338
12 16041540535482336896
13 378367591142818627910
14 8846617965689182153740

List of values

[13924, 315664, 7379204, 173478980, 4093774632, 95639726868, 2255748816966, 52746091216472, 1244121688354740, 29088796774026344, 686098112079186338, 16041540535482336896, 378367591142818627910, 8846617965689182153740]