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.

A253292 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically, diagonally and antidiagonally.

Table of values

n a(n)
1 26784
2 167832
3 1029888
4 8153960
5 61286116
6 465921688
7 3524494796
8 26879615668
9 204459584768
10 1560668372324
11 11882769388376
12 90517446353584
13 689680753666852
14 5257319067276484
15 40057456786744360
16 305206750112569024

List of values

[26784, 167832, 1029888, 8153960, 61286116, 465921688, 3524494796, 26879615668, 204459584768, 1560668372324, 11882769388376, 90517446353584, 689680753666852, 5257319067276484, 40057456786744360, 305206750112569024]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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