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!)
A278723 Number of nX4 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order. 1
35, 1050, 33466, 1058494, 30942600, 815294800, 19328645044, 414671691083, 8109321869307, 145580441811727, 2414555760264316, 37210586178295489, 535549333443944707, 7231147745218833289, 91971617342903492615 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A278727.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..133

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A278727.

Sequence in context: A240826 A210313 A049395 * A215296 A209180 A115492

Adjacent sequences:  A278720 A278721 A278722 * A278724 A278725 A278726

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 27 2016

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 20 07:41 EDT 2020. Contains 337897 sequences. (Running on oeis4.)