login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A305683 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 1
1, 272, 4869, 207116, 8417922, 351440611, 14724197226, 618597002816, 26011056462909, 1094170226062256, 46034445802982048, 1936912759209935324, 81498459201261039711, 3429207685634735798470, 144291337042712251135250 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A305685.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..1..0. .0..0..1..0..1..0. .0..0..1..0..0..1. .0..0..1..0..1..1
..0..0..1..1..0..1. .0..0..1..1..1..1. .0..0..1..1..1..0. .0..0..1..1..0..0
..0..0..0..1..1..0. .0..0..1..1..0..1. .0..0..1..1..1..1. .0..0..1..1..0..0
..1..1..0..0..0..1. .1..1..1..0..0..0. .0..0..0..1..0..0. .1..1..0..0..1..1
..0..1..0..1..1..0. .0..1..0..0..1..1. .1..1..0..0..1..1. .0..1..0..1..1..0
CROSSREFS
Cf. A305685.
Sequence in context: A302899 A266106 A264077 * A317063 A316930 A317701
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 08 2018
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)