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A185765 Number of (n+1)X6 binary arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace 1
680, 3456, 19992, 118248, 725352, 4430912, 27172072, 166155112, 1017804600, 6228062600, 38135220896, 233413737792, 1428998627808, 8747287514112, 53549280280392, 327801163275208, 2006695538548152, 12284116597745992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A185769

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

FORMULA

Empirical: a(n)=a(n-1)+30*a(n-2)+24*a(n-3)-95*a(n-4)-15*a(n-5)+64*a(n-6)-116*a(n-7)+16*a(n-8)+16*a(n-9) for n>12

EXAMPLE

Some solutions for 3X6

..1..0..1..1..0..0....0..1..1..0..1..0....1..0..1..0..1..0....0..0..0..0..0..0

..0..1..0..1..0..0....1..1..1..0..0..1....0..1..0..1..1..1....0..0..1..0..1..0

..0..0..0..0..1..1....0..1..0..1..1..0....0..0..1..1..1..0....1..1..0..0..0..1

CROSSREFS

Sequence in context: A253702 A235013 A154036 * A206015 A202908 A309245

Adjacent sequences:  A185762 A185763 A185764 * A185766 A185767 A185768

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 03 2011

STATUS

approved

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Last modified January 26 14:20 EST 2022. Contains 350598 sequences. (Running on oeis4.)