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!)
A254555 Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1

%I #4 Feb 01 2015 12:27:50

%S 12260,39661,129677,388056,1194944,3557566,10792398,31935630,94243724,

%T 273661647,792918304,2285081398,6585392329,18959530683,54620617680,

%U 157367672295,453569621698,1307460827102,3769569531795,10868903441473

%N Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

%C Row 3 of A254553

%H R. H. Hardin, <a href="/A254555/b254555.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 01 2015

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 May 4 05:30 EDT 2024. Contains 372227 sequences. (Running on oeis4.)