A283572 -id:A283572 - cp's OEIS frontend

A283578 Number of 7Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.

0, 3232, 194173, 4441052, 164714523, 4558585174, 129997769458, 3650965394740, 99090078168196, 2687260014584534, 71764403257467215, 1902366721060350320, 50085438054862185785, 1310060351650654162702, 34098186251976982332364

Offset: 1

R. H. Hardin, Mar 11 2017

nonn

Row 7 of A283572.

			Some solutions for n=3
..0..1..0. .0..0..1. .0..1..0. .0..0..1. .0..1..0. .0..0..0. .0..0..0
..1..0..1. .0..0..1. .1..0..1. .1..0..0. .0..0..0. .1..0..1. .0..0..0
..0..0..1. .1..0..1. .0..0..1. .0..0..1. .1..0..1. .1..0..1. .1..0..0
..0..0..0. .0..1..1. .1..0..1. .0..0..1. .0..0..0. .0..1..0. .0..1..1
..0..1..1. .0..0..1. .0..0..1. .0..1..0. .0..0..0. .0..1..0. .1..0..1
..0..0..0. .1..0..0. .1..0..0. .1..0..1. .1..1..1. .0..0..1. .1..0..1
..0..1..0. .0..0..0. .0..0..0. .0..0..1. .1..0..1. .1..0..1. .1..0..1

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

Cf. A283572.

A283566 Number of n X n 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.

Original entry on oeis.org

0, 4, 169, 6812, 945100, 226897932, 129997769458, 172466774677716, 522509795096193625, 3748613500011644923440, 62982260120608888164984371

Offset: 1

R. H. Hardin, Mar 11 2017

nonn

Diagonal of A283572.

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

Cf. A283572.

cp's OEIS Frontend

A283578 Number of 7Xn 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.

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