A293082 Number of n X 3 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

0, 5, 53, 498, 4013, 31689, 246743, 1915490, 14853287, 115216476, 894466395, 6951525006, 54087414608, 421322913539, 3285654843025, 25650404747946, 200449942963173, 1567942963397654, 12275547702488649, 96186181822236986

Offset

1,2

Comments

Column 3 of A293087.

Links

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

Example

Some solutions for n=4
..1..0..0. .1..0..0. .0..1..0. .1..1..0. .0..0..0. .0..0..0. .0..1..0
..0..0..0. .0..1..1. .0..0..0. .0..1..0. .1..0..0. .0..1..1. .1..0..1
..1..1..0. .0..1..0. .0..0..1. .0..0..0. .1..0..0. .0..1..1. .0..1..0
..0..0..1. .0..1..1. .1..0..0. .1..0..1. .0..1..1. .0..1..0. .0..1..0

Crossrefs

Cf. A293087.

Sequence in context: A058390 A221236 A198963 * A069592 A350995 A065534

Adjacent sequences: A293079 A293080 A293081 * A293083 A293084 A293085

Keyword

nonn

Author

R. H. Hardin, Sep 30 2017

Status

approved