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A284192 Number of n X n 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. 0
1, 4, 43, 5268, 1488503, 3083244672, 18564422929880, 573011303756296687, 62959447148443427630088 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A284199.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A284199.

Sequence in context: A176827 A220675 A222979 * A278798 A102388 A284065

Adjacent sequences:  A284189 A284190 A284191 * A284193 A284194 A284195

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 22 2017

STATUS

approved

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Last modified November 27 09:19 EST 2021. Contains 349365 sequences. (Running on oeis4.)