A285756 Number of 7 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

0, 2896, 265920, 27339964, 3077883556, 345505561776, 40895629554933, 4788769986049492, 578161651518199128, 69329034539728070792, 8460129656506891963059, 1028996276834209548728154

Offset

1,2

Comments

Row 7 of A285750.

Links

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

Example

Some solutions for n=2
..0..0. .0..1. .1..0. .0..0. .1..1. .0..0. .1..1. .1..1. .1..0. .1..0
..0..0. .1..0. .1..1. .1..1. .1..0. .0..0. .0..0. .1..0. .0..1. .1..0
..0..0. .1..0. .0..0. .1..1. .0..1. .0..1. .0..1. .0..0. .0..1. .1..0
..1..0. .1..1. .0..1. .1..0. .1..0. .0..0. .0..0. .0..0. .0..0. .0..0
..1..0. .0..0. .0..0. .1..0. .0..1. .1..1. .0..1. .1..0. .0..0. .0..0
..1..1. .1..0. .0..0. .0..0. .0..0. .1..0. .1..0. .0..0. .1..1. .1..0
..0..0. .0..0. .0..0. .0..1. .1..0. .0..1. .1..0. .1..1. .1..1. .1..1

Crossrefs

Cf. A285750.

Sequence in context: A235822 A235825 A235580 * A248109 A219963 A340201

Adjacent sequences: A285753 A285754 A285755 * A285757 A285758 A285759

Keyword

nonn

Author

R. H. Hardin, Apr 25 2017

Status

approved