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!)
A235256 Number of (n+1)X(6+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant stress tilted 1X1 tilings) 1
161060, 382036, 878988, 2337832, 5990204, 17318888, 47995084, 147612912, 434010540, 1398866408, 4308115948, 14396788496, 46023868476, 158220825048, 521487674780, 1833631650976, 6198214908700, 22195113815928, 76626909673100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A235258

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=1

..3..0..3..1..4..2..7....6..2..4..1..5..0..6....1..4..2..6..4..5..4

..0..4..0..5..1..6..4....4..7..2..6..3..5..4....4..0..5..2..7..1..7

CROSSREFS

Sequence in context: A017285 A017393 A017657 * A233891 A339498 A249880

Adjacent sequences:  A235253 A235254 A235255 * A235257 A235258 A235259

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 05 2014

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 July 25 18:32 EDT 2021. Contains 346291 sequences. (Running on oeis4.)