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!)
A219631 Number of 5 X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 5 X n array. 1

%I #6 Oct 18 2021 16:57:44

%S 21,105,2134,37787,556742,6834071,72702948,702445374,6294733792,

%T 53030925012,423667362928,3227141426434,23525716592355,

%U 164621180489825,1108581089567797,7201000479521853,45212923515402777,274902776652641870

%N Number of 5 X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 5 X n array.

%C Row 5 of A219627.

%H R. H. Hardin, <a href="/A219631/b219631.txt">Table of n, a(n) for n = 1..53</a>

%e Some solutions for n=3

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

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

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

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

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

%Y Cf. A219627.

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 24 2012

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 April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)