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.

A235445 Number of (n+1)X(4+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.

Table of values

n a(n)
1 742
2 15936
3 335898
4 7017768
5 146213244
6 3043145826
7 63315473350
8 1317184566572
9 27401048899854
10 570010121664030
11 11857587445735140
12 246666181271526484
13 5131244813184060086
14 106742118037538403444
15 2220490316595946662760

List of values

[742, 15936, 335898, 7017768, 146213244, 3043145826, 63315473350, 1317184566572, 27401048899854, 570010121664030, 11857587445735140, 246666181271526484, 5131244813184060086, 106742118037538403444, 2220490316595946662760]

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

Content is available under The OEIS End-User License Agreement.