The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A205284 Number of 5X(n+1) 0..3 arrays with 2X2 subblock determinants differing from horizontal neighbors and permanents differing from vertical neighbors 0

%I #4 Mar 31 2012 12:37:05

%S 484930,175224700,65106769738,23973193183186,8815623014830318,

%T 3244606848542957310,1193843450285095672432,439301798787484703151016,

%U 161648322587488088961092694,59481484187637405404114488284

%N Number of 5X(n+1) 0..3 arrays with 2X2 subblock determinants differing from horizontal neighbors and permanents differing from vertical neighbors

%C Row 4 of A205281

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 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.

Last modified December 10 18:13 EST 2023. Contains 367717 sequences. (Running on oeis4.)