A298551 - OEIS

A298551

Number of nX5 0..1 arrays with every element equal to 0, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

1, 31, 16, 74, 341, 1073, 3822, 13570, 48112, 176011, 641370, 2325905, 8461341, 30798091, 112003232, 407659528, 1483951993, 5401187825, 19661302093, 71571646991, 260532678466, 948411515463, 3452495337512, 12568090865542

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 5 of A298554.

LINKS

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

EXAMPLE

Some solutions for n=7

..0..1..0..1..1. .0..0..0..0..1. .0..0..0..1..1. .0..0..1..0..1

..1..1..0..0..1. .0..1..1..0..0. .0..1..1..0..1. .1..0..1..1..1

..0..0..0..0..0. .1..0..1..1..1. .0..1..1..1..0. .0..0..0..0..1

..0..0..1..1..0. .1..1..0..1..1. .0..1..1..1..0. .1..0..0..1..0

..0..0..0..1..0. .1..0..1..1..1. .0..0..0..0..0. .0..0..0..0..1

..1..1..0..1..0. .0..1..1..0..0. .1..1..1..1..1. .1..0..1..1..1

..0..1..1..0..0. .0..0..0..0..1. .1..1..1..1..1. .0..0..1..0..1

CROSSREFS

Cf. A298554.

Sequence in context: A033351 A240910 A297940 * A066434 A040932 A298724

Adjacent sequences: A298548 A298549 A298550 * A298552 A298553 A298554

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 21 2018

STATUS

approved