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!)
A186909 Number of (n+2)X5 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1

%I #6 Mar 31 2012 12:36:06

%S 1276581035,99241308567,4813465754996,171334955820947,

%T 4805827783188400,110909004238159456,2169936652932512523,

%U 36804096662464163093,550615265988952206164,7367827886026471340866,89189622390253052611607

%N Number of (n+2)X5 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order

%C Column 3 of A186915

%H R. H. Hardin, <a href="/A186909/b186909.txt">Table of n, a(n) for n = 1..200</a>

%H R. H. Hardin, <a href="/A186909/a186909.txt">Polynomial of degree 95</a>

%F Polynomial of degree 95 in n, see link.

%e Some solutions for 4X5

%e ..0..0..0..0..6....0..0..0..1..2....0..0..0..0..1....0..0..0..0..2

%e ..0..0..0..0..6....0..0..0..2..2....0..0..0..1..4....0..0..0..2..5

%e ..0..0..0..6..4....0..0..0..3..4....0..0..0..2..2....0..0..0..4..0

%e ..0..0..0..6..5....0..0..0..6..2....0..0..0..6..6....0..0..0..4..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 28 2011

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 February 23 17:43 EST 2024. Contains 370283 sequences. (Running on oeis4.)