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A181242 Number of nX7 binary matrices with no 2X2 circuit having pattern 0101 in any orientation 1

%I #3 Mar 31 2012 12:35:49

%S 128,8042,546410,36806846,2481942354,167341334542,11282914491066,

%T 760744103230314,51292751478532550,3458385370907981754,

%U 233179719922207016438,15722013576638868003178,1060048065098345660585310

%N Number of nX7 binary matrices with no 2X2 circuit having pattern 0101 in any orientation

%C Column 7 of A181245

%H R. H. Hardin, <a href="/A181242/b181242.txt">Table of n, a(n) for n=1..200</a>

%F Empirical: a(n)=77*a(n-1)-429*a(n-2)-16791*a(n-3)+132938*a(n-4)+1140609*a(n-5)-11250708*a(n-6)-21101443*a(n-7)+356560316*a(n-8)-276630106*a(n-9)-3595865197*a(n-10)+5253257444*a(n-11)+16399879057*a(n-12)-30419637636*a(n-13)-37486637674*a(n-14)+87632998667*a(n-15)+40083109062*a(n-16)-140235056122*a(n-17)-7589163210*a(n-18)+128111780723*a(n-19)-23221600421*a(n-20)-65939015129*a(n-21)+21868944788*a(n-22)+18307048178*a(n-23)-8259596531*a(n-24)-2431120428*a(n-25)+1497147381*a(n-26)+85285300*a(n-27)-123174410*a(n-28)+8581030*a(n-29)+3300116*a(n-30)-512304*a(n-31)+18304*a(n-32)

%K nonn

%O 1,1

%A _R. H. Hardin_ Oct 10 2010

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)