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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.

A251061 Number of (n+1)X(4+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01.

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%I A251061 #6 Jun 02 2025 10:17:30
%S A251061 3123,89429,2482824,71431719,2062530658,59730054958,1731036678270,
%T A251061 50188065312931,1455292342943790,42201961348177580,
%U A251061 1223840515308222344,35491430464043617892,1029257212053833200296,29848718048671125722468
%N A251061 Number of (n+1)X(4+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01.
%C A251061 Column 4 of A251065
%H A251061 R. H. Hardin, <a href="/A251061/b251061.txt">Table of n, a(n) for n = 1..210</a>
%e A251061 Some solutions for n=2
%e A251061 ..0..1..2..2..2....0..1..1..1..2....1..1..1..0..0....0..0..2..1..2
%e A251061 ..1..2..1..1..2....0..1..1..1..1....1..1..1..2..2....0..1..0..2..2
%e A251061 ..0..0..1..2..2....0..0..2..2..2....0..0..1..0..2....1..1..2..0..2
%K A251061 nonn
%O A251061 1,1
%A A251061 _R. H. Hardin_, Nov 29 2014

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