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!)
A295044 Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1's. 0
2, 8, 72, 1569, 79855, 9388654, 2573527520, 1637027372706, 2419325802095729, 8303882960856820956, 66201888284206993138538, 1225832721132764188627254836 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A295051.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..0. .1..0..1..0..1. .0..0..1..0..0. .0..0..0..0..0
..0..0..1..0..0. .0..0..0..0..0. .1..0..0..1..0. .1..0..0..1..1
..0..0..0..0..0. .1..0..0..0..1. .0..0..0..0..0. .0..1..0..1..1
..0..1..1..0..1. .0..0..0..0..0. .1..0..0..0..1. .1..0..1..0..0
..0..1..1..0..0. .1..0..0..0..0. .0..1..0..0..0. .0..0..0..0..0
CROSSREFS
Cf. A295051.
Sequence in context: A294351 A342177 A125814 * A305000 A013002 A012998
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 13 2017
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 February 28 07:05 EST 2024. Contains 370387 sequences. (Running on oeis4.)