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!)
A185921 Number of (n+1)X4 0..3 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant 1
49342, 7232034, 1079255234, 160170012852, 23757227154988, 3524972742682648, 522964399238602036, 77588547894909110228, 11511228098599228957442, 1707835005432644412456998, 253378710999044741081140368 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A185923

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..89

EXAMPLE

Some solutions for 3X4

..0..1..2..2....0..3..2..2....0..1..0..0....0..1..0..2....0..2..3..1

..2..0..1..2....1..0..3..0....3..0..2..0....1..0..2..0....2..2..3..0

..0..3..1..3....0..3..0..3....0..3..1..1....0..1..0..3....0..1..2..1

CROSSREFS

Sequence in context: A253372 A204227 A205279 * A251912 A251910 A235172

Adjacent sequences:  A185918 A185919 A185920 * A185922 A185923 A185924

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2011

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 June 30 08:08 EDT 2022. Contains 354914 sequences. (Running on oeis4.)