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!)
A237566 Number of (n+1)X(7+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 1
311512, 4121060, 61521086, 977290740, 14891233160, 228407442348, 3615152813462, 55793291175056, 882176438911922, 13667993065228308, 217505797950500694, 3377924302868998888, 53802897865062024654 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A237567

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A205204 A205062 A257015 * A224631 A180461 A250371

Adjacent sequences: A237563 A237564 A237565 * A237567 A237568 A237569

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 09 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 29 00:02 EST 2023. Contains 359905 sequences. (Running on oeis4.)