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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.

A184667 Number of (n+1)X4 0..3 arrays with no 2X2 subblock summing to less than 6.

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%I A184667 #7 Jun 02 2025 03:49:32
%S A184667 19269,2405797,266060160,30765364899,3509487618613,402221585928132,
%T A184667 46028365937520330,5269979734803579913,603279614829234560146,
%U A184667 69064202595023175071177,7906407074804511304606829
%N A184667 Number of (n+1)X4 0..3 arrays with no 2X2 subblock summing to less than 6.
%C A184667 Column 3 of A184673
%H A184667 R. H. Hardin, <a href="/A184667/b184667.txt">Table of n, a(n) for n = 1..200</a>
%e A184667 Some solutions for 3X4
%e A184667 ..0..2..0..0....2..2..0..1....0..2..2..1....2..2..2..2....2..2..2..1
%e A184667 ..2..2..3..3....3..2..3..2....3..2..2..2....3..0..3..2....2..2..2..1
%e A184667 ..3..3..3..3....1..1..2..3....2..3..2..3....3..2..3..1....1..3..0..3
%K A184667 nonn
%O A184667 1,1
%A A184667 _R. H. Hardin_ Jan 19 2011

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