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A284160 Number of n X 3 0..1 arrays with the number of 1's horizontally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero. 1
3, 13, 62, 461, 2872, 21790, 154108, 1174235, 8682209, 66280564, 500956582, 3842195970, 29399659661, 226595079490, 1747037865422, 13523344571285, 104799855374221, 814166845363267, 6333123661559589, 49348005883512820 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A284165.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A284165.

Sequence in context: A093424 A186242 A276893 * A092467 A034478 A026715

Adjacent sequences:  A284157 A284158 A284159 * A284161 A284162 A284163

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 21 2017

STATUS

approved

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Last modified July 30 07:55 EDT 2021. Contains 346348 sequences. (Running on oeis4.)