login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A305507
Number of nX6 0..1 arrays with every element unequal to 2, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.
1
0, 209, 464, 10182, 101912, 1126154, 13419832, 155294889, 1779735908, 20787421456, 240404798165, 2785733460032, 32316684221838, 374520718369338, 4341656074660714, 50335182498171381, 583493054961493312
OFFSET
1,2
COMMENTS
Column 6 of A305509.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..1..1. .0..1..0..1..0..1. .0..0..0..0..1..0. .0..1..0..0..1..0
..1..0..0..0..0..0. .1..0..1..0..0..0. .1..1..0..1..1..0. .1..1..0..0..1..0
..1..0..0..1..0..1. .1..1..1..0..0..1. .0..1..0..1..1..0. .0..0..0..0..1..0
..0..0..1..0..1..1. .0..1..1..1..0..1. .0..1..1..0..0..1. .0..1..0..1..1..1
..1..0..0..1..0..0. .1..0..0..0..0..1. .1..0..1..0..0..1. .1..0..1..1..0..0
CROSSREFS
Cf. A305509.
Sequence in context: A064906 A337778 A304154 * A211672 A250780 A305173
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 03 2018
STATUS
approved