

A183284


Half the number of nX3 binary arrays with the number of 11 horizontal, vertical, diagonal and antidiagonal adjacencies equal to the number of 00 adjacencies


1



1, 6, 1, 180, 116, 8016, 9746, 398126, 725872, 20910204, 50854089, 1137666502, 3437745554, 63460798680, 227195157189, 3607654634376, 14790377127600, 208205724243960, 952891467281892, 12165590563428240, 60941926764726246
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OFFSET

1,2


COMMENTS



LINKS



EXAMPLE

Some solutions for 4X3 with a(1,1)=0
..0..1..1....0..0..0....0..1..1....0..0..1....0..0..0....0..1..1....0..1..0
..0..1..1....1..1..0....1..1..1....1..1..0....0..1..1....0..0..1....1..1..0
..0..0..1....1..0..1....0..0..0....1..0..1....0..1..1....0..1..0....0..1..0
..0..0..1....1..0..1....1..0..0....0..0..1....1..0..0....0..1..1....0..0..1


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



