A285145 Number of n X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

0, 2, 113, 11574, 4551741, 7586120602, 52105131287528, 1469435682255774972, 168943399492409779855098, 78854409689567939731003347822, 148970519290227262688309540510302237

Offset

1,2

Comments

Diagonal of A285152.

Links

R. H. Hardin, Table of n, a(n) for n = 1..12

Example

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

Crossrefs

Cf. A285152.

Sequence in context: A209611 A042567 A142112 * A278925 A053976 A217088

Adjacent sequences: A285142 A285143 A285144 * A285146 A285147 A285148

Keyword

nonn

Author

R. H. Hardin, Apr 12 2017

Status

approved