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A199654 Number of nX7 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors 1
365, 571530, 713445976, 898852775335, 1132589231853096, 1427019666767669979, 1797997097480559332224, 2265416280260844187870380, 2854348741463033805904551375, 3596383952736036093799275624989 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A199655

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..35

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A209106 A208257 A223132 * A241113 A208321 A208391

Adjacent sequences:  A199651 A199652 A199653 * A199655 A199656 A199657

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 08 2011

STATUS

approved

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Last modified May 27 02:13 EDT 2022. Contains 354092 sequences. (Running on oeis4.)