login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A250615 Number of (n+1)X(3+1) 0..2 arrays with nondecreasing maximum of every two consecutive values in every row and column 1
2704, 71610, 1690656, 32944614, 595652178, 9955305702, 159191945604, 2447786874761, 36658965039940, 537101491175460, 7742699987325454, 110146944374439952, 1550863271320446778, 21652702233916294607 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A250620

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A254506 A254813 A270542 * A193172 A281838 A205605

Adjacent sequences:  A250612 A250613 A250614 * A250616 A250617 A250618

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 14 00:10 EDT 2019. Contains 327990 sequences. (Running on oeis4.)