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A184670 Number of (n+1)X7 0..3 arrays with no 2X2 subblock summing to less than 6 1

%I #5 Mar 31 2012 12:36:00

%S 27278035,117938741095,402221585928132,1498459859767029015,

%T 5429971895805945122143,19869188673828370548366580,

%U 72469574283521150229737165516,264615725211389828099780842721919

%N Number of (n+1)X7 0..3 arrays with no 2X2 subblock summing to less than 6

%C Column 6 of A184673

%H R. H. Hardin, <a href="/A184670/b184670.txt">Table of n, a(n) for n = 1..58</a>

%e Some solutions for 3X7

%e ..0..0..0..2..0..1..1....0..0..0..0..2..1..2....0..0..0..2..2..2..3

%e ..3..3..3..2..3..2..2....3..3..3..3..2..3..0....3..3..3..2..0..3..2

%e ..0..0..0..1..2..2..2....0..0..0..0..3..3..2....0..0..0..3..3..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 19 2011

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Last modified February 22 19:33 EST 2024. Contains 370260 sequences. (Running on oeis4.)