login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A201212 Number of nX4 0..3 arrays with every row and column running average nondecreasing rightwards and downwards 1
51, 867, 11932, 146946, 1692945, 18624423, 198262359, 2055746385, 20869314255, 208139081237, 2045065967111, 19837690800848, 190312987378848, 1808321481842796, 17039496826295448, 159395007901738133 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A201216

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..29

EXAMPLE

Some solutions for n=3

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

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

..2..2..3..3....1..3..3..3....1..1..3..2....2..3..3..3....1..2..2..2

CROSSREFS

Sequence in context: A210079 A201832 A317651 * A153221 A172639 A231648

Adjacent sequences:  A201209 A201210 A201211 * A201213 A201214 A201215

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 28 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 10 23:31 EDT 2021. Contains 343784 sequences. (Running on oeis4.)