A304667 - OEIS

A304667

Number of n X 6 0..1 arrays with every element unequal to 0, 1, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

13, 105, 123, 544, 1926, 5101, 15421, 48922, 143214, 444335, 1400682, 4214900, 12959240, 40298167, 122726980, 376705486, 1164728930, 3566783028, 10948433283, 33744267108, 103560501696, 317995281524, 978582172848, 3005885925021

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

OFFSET

1,1

COMMENTS

Column 6 of A304669.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304669.

Sequence in context: A303967 A304929 A041316 * A306170 A305345 A316613

Adjacent sequences: A304664 A304665 A304666 * A304668 A304669 A304670

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 16 2018

STATUS

approved