

A233071


Number of nX6 0..3 arrays with no element x(i,j) adjacent to value 3x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order


1



122, 9801, 952869, 95264272, 9622519979, 975239425635, 98950914937033, 10043490383783484, 1019526537402445651, 103496939942560822667, 10506573357624046461778, 1066586510863326927801797
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OFFSET

1,1


COMMENTS



LINKS



FORMULA

Empirical recurrence of order 58 (see link above)


EXAMPLE

Some solutions for n=2
..0..1..0..0..0..0....0..1..0..0..0..2....0..1..0..1..3..3....0..1..1..0..0..2
..1..0..0..1..1..0....1..1..0..2..2..0....1..0..0..1..3..2....1..1..0..0..0..2


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



