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A303413
Number of 6Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
0, 162, 2327, 3256, 21361, 236326, 1716995, 8688851, 56229035, 428784791, 3021617644, 19058753004, 128800589241, 899664264951, 6188584855591, 41513163165807, 282748964373121, 1940464266658865, 13278427810584311
OFFSET
1,2
COMMENTS
Row 6 of A303410.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0. .0..1..0..1..1. .0..0..1..0..0. .0..0..1..0..0
..0..0..0..0..0. .1..0..1..0..0. .1..0..1..1..0. .1..0..1..1..1
..1..1..1..1..1. .1..1..1..1..1. .1..1..0..0..0. .0..1..1..0..0
..1..0..1..0..1. .0..0..1..0..0. .0..0..1..0..0. .1..0..1..0..1
..1..1..0..1..1. .1..0..1..0..1. .1..0..1..1..0. .1..0..1..1..1
..0..0..1..0..0. .1..1..1..1..1. .1..1..1..0..1. .0..1..0..0..1
CROSSREFS
Cf. A303410.
Sequence in context: A213288 A302532 A288489 * A249295 A221871 A245955
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 23 2018
STATUS
approved