login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A298718 Number of nX7 0..1 arrays with every element equal to 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero. 1
0, 54, 1005, 13650, 309593, 8287084, 193439202, 4672566734, 112689610775, 2731899175896, 66122998854098, 1599672498018255, 38731486336940251, 937609098603118557, 22696092440623817595, 549420999860489552558 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A298719.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298719.

Sequence in context: A281776 A160345 A324952 * A245832 A121625 A341940

Adjacent sequences:  A298715 A298716 A298717 * A298719 A298720 A298721

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 25 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 21 00:40 EDT 2021. Contains 345329 sequences. (Running on oeis4.)