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.

A217644 Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..2 nX7 array.

This page as a plain text file.
%I A217644 #6 Jul 22 2025 23:42:34
%S A217644 163,3121,166193,7531727,374406369,18482872753,912173011699,
%T A217644 45172801496675,2234877786749541,110611616704879795,
%U A217644 5474859780340931141,270972286809199358975,13411953206311122874641,663829781516203470875045
%N A217644 Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..2 nX7 array.
%C A217644 Column 7 of A217645
%H A217644 R. H. Hardin, <a href="/A217644/b217644.txt">Table of n, a(n) for n = 1..19</a>
%e A217644 Some solutions for n=3
%e A217644 ..0..0..2..1..0..0..0....0..0..1..1..2..1..1....0..0..1..1..0..0..1
%e A217644 ..0..1..2..1..0..0..0....0..1..1..0..0..0..1....0..1..2..0..0..0..2
%e A217644 ..1..2..1..1..0..0..2....1..2..0..0..0..0..2....1..2..0..0..0..1..2
%K A217644 nonn
%O A217644 1,1
%A A217644 _R. H. Hardin_ Oct 09 2012