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A293106 Number of 7Xn 0..1 arrays with the number of 1s horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0s adjacent to some 1. 1
0, 2088, 202363, 25504769, 2804027631, 331401441383, 38469698642410, 4639160801369811, 553541878970691305, 67495383900522580833, 8184590699346266638663, 1005200402879395725773000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A293100.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..14

EXAMPLE

Some solutions for n=2

..0..0. .0..1. .0..0. .0..1. .0..0. .0..0. .0..1. .0..0. .0..1. .0..1

..1..0. .0..1. .1..0. .0..0. .0..1. .0..0. .0..0. .1..1. .0..0. .1..0

..0..1. .0..1. .1..0. .0..0. .0..1. .1..0. .1..0. .1..0. .1..0. .1..0

..1..0. .1..0. .0..0. .1..1. .0..0. .1..1. .1..0. .1..0. .1..0. .0..0

..0..1. .0..0. .0..0. .0..1. .1..0. .1..0. .1..0. .1..0. .1..1. .1..1

..1..0. .0..0. .1..1. .1..0. .1..1. .0..0. .1..0. .0..0. .0..0. .0..0

..0..0. .1..0. .1..0. .0..0. .1..0. .0..1. .0..1. .0..1. .0..1. .0..1

CROSSREFS

Cf. A293100.

Sequence in context: A201917 A250076 A255146 * A221360 A106720 A179124

Adjacent sequences:  A293103 A293104 A293105 * A293107 A293108 A293109

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 30 2017

STATUS

approved

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Last modified January 19 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)