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!)
A251972 Number of (n+1) X (6+1) 0..3 arrays with nondecreasing sum of every two consecutive values in every row and column. 1

%I #6 Jun 18 2022 19:15:21

%S 490000,60025000,7353062500,345888060000,16270574342400,

%T 410018473428480,10332465530397696,167006381634183168,

%U 2699368454168838144,31245878471405875200,361679014193888160000,3225176243350261200000

%N Number of (n+1) X (6+1) 0..3 arrays with nondecreasing sum of every two consecutive values in every row and column.

%C Column 6 of A251974.

%H R. H. Hardin, <a href="/A251972/b251972.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=1

%e ..0..0..0..0..1..2..2....0..0..0..0..3..1..3....0..0..2..0..2..0..2

%e ..0..1..0..2..0..2..2....0..0..1..0..1..3..3....0..0..0..0..0..1..1

%Y Cf. A251974.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 12 2014

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 March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)