A293102 Number of 3 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

0, 5, 48, 567, 3619, 29952, 205195, 1668655, 11923187, 95858790, 705043648, 5616676646, 42133302832, 333647307242, 2537702957116, 20021680973470, 153782369918531, 1210816646023012, 9365720486918309, 73671711375313024

Offset

1,2

Comments

Row 3 of A293100.

Links

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

Example

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

Crossrefs

Cf. A293100.

Sequence in context: A247769 A116431 A048435 * A023999 A126224 A360235

Adjacent sequences: A293099 A293100 A293101 * A293103 A293104 A293105

Keyword

nonn

Author

R. H. Hardin, Sep 30 2017

Status

approved