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A202986 Number of nX6 0..2 arrays with every nonzero element less than or equal to some NW, E or S neighbor 1
1, 8534, 3557168, 838636921, 206497187067, 54374200726981, 14227778139316647, 3693790499807299502, 959798789450215934207, 249610028607626092454331, 64906131220280468592835979, 16875929361732611231646814498 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A202988

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..0..2..2..2..1..0....2..2..2..2..2..2....0..2..1..2..2..0....1..1..2..2..1..0

..0..2..2..2..1..1....1..1..2..0..0..2....2..2..2..1..2..1....1..1..2..2..2..0

CROSSREFS

Sequence in context: A260988 A188214 A252810 * A297896 A217338 A217163

Adjacent sequences: A202983 A202984 A202985 * A202987 A202988 A202989

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 26 2011

STATUS

approved

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Last modified December 9 23:05 EST 2022. Contains 358710 sequences. (Running on oeis4.)