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.

A235675 Number of (n+1)X(4+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise.

Table of values

n a(n)
1 742
2 15790
3 330840
4 6894210
5 143484144
6 2985166430
7 62100488254
8 1291848133836
9 26873571586520
10 559034577488572
11 11629252189546650
12 241916151493365248
13 5032432178704803216
14 104686575579504167834
15 2177730111458692702436

List of values

[742, 15790, 330840, 6894210, 143484144, 2985166430, 62100488254, 1291848133836, 26873571586520, 559034577488572, 11629252189546650, 241916151493365248, 5032432178704803216, 104686575579504167834, 2177730111458692702436]

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

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