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!)
A203187 Number of nX4 0..4 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor 1
95, 53233, 19617781, 6474088455, 2202928769005, 754868206701309, 257892549401944763, 88078489175441149541, 30090514056455942145831, 10279936119776186239585141, 3511875047988498805215621351 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A203191

LINKS

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

EXAMPLE

Some solutions for n=4

..1..0..0..3....4..0..0..0....4..0..3..2....4..3..1..0....2..3..3..4

..2..0..2..3....4..4..0..0....4..4..4..3....4..2..2..3....2..4..4..4

..2..1..0..3....4..4..1..4....0..3..4..2....2..0..1..3....2..1..3..3

..1..4..4..3....4..2..2..4....4..4..1..1....0..0..3..3....3..3..4..4

CROSSREFS

Sequence in context: A017758 A203342 A255936 * A103281 A266173 A057400

Adjacent sequences:  A203184 A203185 A203186 * A203188 A203189 A203190

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 30 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 1 13:45 EDT 2022. Contains 354973 sequences. (Running on oeis4.)