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A185768 Number of (n+1)X9 binary arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace 1

%I

%S 11400,99464,1071200,12760448,166155112,2212654240,29857704328,

%T 404009799752,5470539659856,74057459086320,1002612561951160,

%U 13573903623389016,183767715146185232,2487947552529036000

%N Number of (n+1)X9 binary arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace

%C Column 8 of A185769

%H R. H. Hardin, <a href="/A185768/b185768.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n)=a(n-1)+179*a(n-2)+341*a(n-3)-6316*a(n-4)-6138*a(n-5)+92272*a(n-6)-87872*a(n-7)-479803*a(n-8)+1815915*a(n-9)-852208*a(n-10)-6873004*a(n-11)+8175787*a(n-12)+6036792*a(n-13)-5492010*a(n-14)-12389568*a(n-15)+3504328*a(n-16)+38808492*a(n-17)-4735254*a(n-18)-36745560*a(n-19)-36433267*a(n-20)+12744011*a(n-21)+28480781*a(n-22)+9986028*a(n-23)-2174189*a(n-24)-3904760*a(n-25)-845298*a(n-26)-118044*a(n-27)-60864*a(n-28)-3296*a(n-29)-32*a(n-30) for n>36

%e Some solutions for 3X9

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 03 2011

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Last modified June 29 23:00 EDT 2022. Contains 354913 sequences. (Running on oeis4.)