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!)
A203875 Number of (n+1)X6 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order 1
39367, 10501975, 2801693287, 748675224487, 200096473566151, 53482170255256135, 14294949784964335495, 3820825310863126339495, 1021249636238740150452295, 272964825632097717303241351 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A203878
LINKS
FORMULA
Empirical: a(n) = 304*a(n-1) -8430*a(n-2) -386764*a(n-3) +4486195*a(n-4) +17085516*a(n-5) -113413636*a(n-6) +92236816*a(n-7)
EXAMPLE
Some solutions for n=4
..0..1..1..1..2..1....0..0..0..0..0..0....0..0..0..1..0..0....0..0..0..0..0..0
..2..3..0..3..0..0....1..2..1..1..1..3....1..2..2..2..2..2....1..1..2..1..1..2
..1..3..0..2..1..1....1..3..3..2..2..3....0..0..1..0..3..3....2..3..0..0..3..3
..2..2..1..2..0..2....0..2..0..0..1..0....1..3..2..0..1..0....0..3..1..1..1..0
..0..3..3..2..3..1....0..1..1..3..3..0....0..3..1..3..3..3....0..2..2..2..2..3
CROSSREFS
Sequence in context: A234033 A253940 A183833 * A252604 A340062 A031823
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 07 2012
STATUS
approved

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 21 03:36 EDT 2024. Contains 371850 sequences. (Running on oeis4.)