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!)
A252948 Number of (n+2)X(4+2) 0..2 arrays with every consecutive three elements in every row, column and nw-se diagonal having exactly two distinct values, and new values 0 upwards introduced in row major order 1
11943, 57978, 334197, 2101338, 13646115, 90331596, 603797472, 4053062745, 27261133281, 183573601551, 1236849898797, 8335733861484, 56186781207696, 378754028778393, 2553271491665079, 17212557055072455, 116037485548768206 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A252952

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..161

EXAMPLE

Some solutions for n=2

..0..1..1..0..0..2....0..0..1..1..0..0....0..0..1..1..2..1....0..1..1..2..1..1

..1..2..1..2..1..2....1..1..0..0..1..1....2..0..0..2..0..0....0..1..0..1..1..2

..1..1..2..2..1..1....1..0..1..1..0..0....0..1..1..2..2..1....1..0..1..1..0..1

..0..2..2..1..2..1....0..1..0..0..1..1....0..1..1..0..0..1....0..0..1..0..1..1

CROSSREFS

Sequence in context: A321157 A237635 A344629 * A065701 A237491 A235074

Adjacent sequences:  A252945 A252946 A252947 * A252949 A252950 A252951

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 25 2014

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 May 25 02:55 EDT 2022. Contains 354047 sequences. (Running on oeis4.)