|
|
A258904
|
|
Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock diagonal median plus antidiagonal median nondecreasing horizontally and vertically
|
|
1
|
|
|
2736, 15416, 86968, 510095, 2769733, 14722533, 77704089, 402403692, 2062226823, 10488813781, 52939478488, 265527812185, 1324994602509, 6581490633215, 32559651513057, 160510299526305, 788781424462817, 3865274521037444
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=3
..0..1..1..1....1..0..0..1....1..1..0..0....0..1..1..1....0..0..1..0
..1..1..0..0....0..0..0..0....1..0..0..1....0..0..0..1....0..0..0..0
..1..1..1..1....1..0..0..1....1..1..0..0....0..1..1..1....0..0..0..0
..1..1..1..1....1..0..0..1....0..1..1..0....0..0..1..1....0..1..1..1
..1..1..1..0....1..0..0..0....1..1..1..1....1..0..1..1....0..1..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|