login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A207202
Number of n X n 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal
0
3, 81, 11047, 7766709, 29420037104, 619075354969204, 72904426459924759331
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A207208
LINKS
Table of n, a(n) for n=1..7.
EXAMPLE
Some solutions for n=5
..2..1..0..2..2....1..2..0..0..2....0..0..2..1..0....1..2..2..1..2
..0..0..2..1..0....0..2..0..1..2....0..1..0..2..2....2..1..0..0..2
..2..2..0..2..0....0..2..0..0..2....2..0..1..2..0....1..1..0..2..1
..2..2..2..0..2....2..1..2..0..0....2..1..2..1..0....2..0..2..0..2
..2..0..2..2..0....1..2..2..2..2....1..1..0..2..0....2..1..1..1..0
CROSSREFS
Sequence in context: A207007 A223783 A223969 * A206856 A206951 A206726
Adjacent sequences: A207199 A207200 A207201 * A207203 A207204 A207205
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 15 2012
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified November 16 19:30 EST 2024. Contains 377804 sequences.
License Agreements, Terms of Use, Privacy Policy