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A205253 Number of (n+1)X7 0..1 arrays with the number of clockwise edge increases in every 2X2 subblock the same 1

%I #5 Mar 31 2012 12:37:05

%S 2920,71000,1764364,44183032,1109832184,27913330476,702420750928,

%T 17679917387408,445045123432100,11203277447970640,282028756620227128,

%U 7099777698513424924,178729975670304808352,4499358353656818662432

%N Number of (n+1)X7 0..1 arrays with the number of clockwise edge increases in every 2X2 subblock the same

%C Column 6 of A205255

%H R. H. Hardin, <a href="/A205253/b205253.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 56*a(n-1) -1164*a(n-2) +12439*a(n-3) -78536*a(n-4) +314610*a(n-5) -829844*a(n-6) +1464316*a(n-7) -1728640*a(n-8) +1345964*a(n-9) -671600*a(n-10) +205552*a(n-11) -36416*a(n-12) +3392*a(n-13) -128*a(n-14)

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 24 2012

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Last modified May 26 20:29 EDT 2024. Contains 372844 sequences. (Running on oeis4.)