login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A234682 Number of (n+1)X(n+1) 0..6 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant stress 1X1 tilings) 0
232, 4416, 49480, 531984, 4224328, 37361280, 265716040, 2168371104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A234690

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

..5..4..5..4....5..1..3..0....5..6..5..6....1..1..0..5....5..3..6..3

..0..4..0..4....3..4..1..3....4..0..4..0....5..0..4..4....0..3..1..3

..4..3..4..3....6..2..4..1....3..4..3..4....2..2..1..6....2..0..3..0

..2..6..2..6....4..5..2..4....0..6..0..6....5..0..4..4....0..3..1..3

CROSSREFS

Sequence in context: A234683 A238919 A327831 * A156391 A279660 A188401

Adjacent sequences:  A234679 A234680 A234681 * A234683 A234684 A234685

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 29 2013

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 26 16:30 EST 2021. Contains 340442 sequences. (Running on oeis4.)