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!)
A187354 Number of (n+2)X3 0..3 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum 1
5056, 7776, 440192, 2332924, 52776112, 460096436, 7500948108, 81056245820, 1156120104976, 13724956896132, 184898111031588, 2289480339888852, 30076021725983316, 379711139922795776, 4931568342034316252 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 1 of A187356
LINKS
EXAMPLE
Some solutions for 4X3
..3..0..3....1..0..0....2..2..0....0..0..3....1..1..2....2..2..1....1..1..3
..2..2..2....0..3..1....2..0..3....3..3..1....1..1..1....2..1..3....1..2..0
..3..0..3....1..0..0....2..1..2....0..1..1....3..0..2....2..2..1....1..2..1
..3..1..3....0..3..1....3..0..2....3..2..3....0..1..2....1..2..2....0..2..1
CROSSREFS
Sequence in context: A155145 A281679 A187356 * A160757 A046169 A209782
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 08 2011
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 July 18 07:53 EDT 2024. Contains 374377 sequences. (Running on oeis4.)