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.

A219600 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 7Xn array.

This page as a plain text file.
%I A219600 #5 Jul 23 2025 00:34:37
%S A219600 28,247,4129,60252,1093496,21435360,415752625
%N A219600 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 7Xn array.
%C A219600 Row 7 of A219595
%e A219600 Some solutions for n=3
%e A219600 ..0..0..0....0..0..0....1..0..0....0..0..0....1..0..0....0..0..0....1..1..1
%e A219600 ..1..0..0....0..0..0....1..0..0....0..0..0....1..1..0....1..0..0....1..1..1
%e A219600 ..1..1..1....1..1..1....1..1..0....1..0..0....1..0..0....1..1..1....1..1..0
%e A219600 ..1..1..0....1..1..1....1..0..1....2..1..0....0..0..0....1..0..1....1..0..0
%e A219600 ..1..0..0....2..2..1....0..0..0....2..2..1....0..0..0....0..0..0....1..0..0
%e A219600 ..0..0..0....2..2..2....2..0..1....2..2..2....2..0..1....0..0..0....2..0..0
%e A219600 ..1..0..0....2..2..2....2..1..1....2..2..2....2..1..1....2..0..0....2..2..0
%K A219600 nonn
%O A219600 1,1
%A A219600 _R. H. Hardin_ Nov 23 2012