A297506 -id:A297506 - cp's OEIS frontend

A297512 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s.

1, 2735, 53175, 573119, 35919085, 1272836591, 28914051279, 949224569894, 32507021089982, 940396282368163, 28523594741249476, 910897573503281049, 27940827448011878850, 852581385081080135117, 26505475722899552411184

Offset: 1

R. H. Hardin, Dec 31 2017

nonn

Row 7 of A297506.

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

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

Cf. A297506.

A297500 Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1's.

Original entry on oeis.org

1, 10, 110, 2281, 270845, 66289769, 28914051279, 44145856928170, 190314910908111935, 1690602288933775004206, 41411616264665765678770302

Offset: 1

R. H. Hardin, Dec 31 2017

nonn

Diagonal of A297506.

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

Cf. A297506.

cp's OEIS Frontend

A297512 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s.

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