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A227262 Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order 1

%I

%S 6,96,1111,11932,112349,937865,6961606,46364258,280471755,1557597103,

%T 8014162577,38505244717,173924889597,742804988619,3014292672706,

%U 11671178123287,43274437542484,154133395370348,528811622382841

%N Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order

%C Column 5 of A227263

%H R. H. Hardin, <a href="/A227262/b227262.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A227262/a227262.txt">Empirical polynomial of degree 39</a>

%F Empirical polynomial of degree 39 (see link above)

%e Some solutions for n=4

%e ..1..1..0..0..0....1..1..1..0..0....1..1..1..1..0....1..1..1..1..1

%e ..1..1..0..0..0....1..0..0..0..0....1..0..1..1..1....1..1..0..0..1

%e ..1..1..0..0..0....0..0..0..0..1....0..0..0..0..1....1..1..1..1..0

%e ..1..0..0..1..1....0..0..0..0..0....0..1..1..0..1....0..1..1..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jul 04 2013

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Last modified December 9 11:21 EST 2022. Contains 358700 sequences. (Running on oeis4.)