A281933 Number of nX5 0..1 arrays with no element equal to more than four of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

0, 33, 3573, 105766, 2714834, 60084175, 1216849775, 23300375254, 428250392864, 7629943002132, 132678096634884, 2262509340153066, 37965514525586842, 628531537599590562, 10286765597910167301, 166699691600830412057

Offset

1,2

Comments

Column 5 of A281936.

Links

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

Example

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

Crossrefs

Cf. A281936.

Sequence in context: A242019 A305140 A282374 * A232292 A271334 A230182

Adjacent sequences: A281930 A281931 A281932 * A281934 A281935 A281936

Keyword

nonn

Author

R. H. Hardin, Feb 02 2017

Status

approved