login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A208703 Number of nXn 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors 1
1, 8, 196, 16084, 4226368, 3613193828, 10001404535216, 89755737081698964, 2610569024927748701352, 246105734855228896970291844, 75198808251676193628977268566832, 74474161314983311603786393034039933768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A208709

LINKS

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

EXAMPLE

Some solutions for n=4

..0..0..1..0....0..0..0..1....0..1..0..1....0..0..0..1....0..1..1..0

..0..0..1..0....1..0..1..1....1..0..1..1....1..0..0..0....0..0..1..0

..1..1..0..0....0..0..1..0....0..0..0..1....1..1..1..1....0..0..1..1

..1..1..0..0....0..1..0..0....0..1..0..1....1..0..1..1....1..0..0..0

CROSSREFS

Sequence in context: A103500 A119299 A024287 * A020329 A034861 A221121

Adjacent sequences:  A208700 A208701 A208702 * A208704 A208705 A208706

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified May 19 13:28 EDT 2013. Contains 225429 sequences.