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.

A220159 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or diagonal 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 A220159 #5 Jul 23 2025 00:54:29
%S A220159 36,266,5493,108169,2173203,42648602,822242009,15270635323
%N A220159 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 7Xn array.
%C A220159 Row 7 of A220153
%e A220159 Some solutions for n=3
%e A220159 ..1..0..1....0..0..0....1..0..0....1..1..1....0..0..0....0..0..0....0..0..0
%e A220159 ..1..0..0....0..0..0....1..1..1....0..0..1....1..1..0....0..0..0....1..0..0
%e A220159 ..2..1..1....1..0..0....1..1..1....0..0..0....1..1..2....0..1..0....1..0..2
%e A220159 ..2..2..2....1..0..1....0..1..1....1..1..0....1..1..2....0..0..0....1..0..0
%e A220159 ..2..2..2....1..0..0....0..0..0....1..0..1....1..0..2....1..0..0....1..0..0
%e A220159 ..2..2..2....1..1..2....2..1..0....2..0..0....2..0..0....1..0..0....1..0..0
%e A220159 ..2..2..2....1..1..1....2..1..1....2..0..0....2..1..1....2..1..1....2..2..1
%K A220159 nonn
%O A220159 1,1
%A A220159 _R. H. Hardin_ Dec 06 2012