|
|
A255145
|
|
Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 1 and no column sum 1
|
|
1
|
|
|
784, 4576, 29731, 190731, 1241971, 8173810, 53762469, 353508918, 2326278688, 15311112333, 100764625099, 663153932703, 4364538269828, 28725088912609, 189051972965420, 1244235148878152, 8188881476050733, 53894720638538655
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
Empirical recurrence of order 76 (see link above)
|
|
EXAMPLE
|
Some solutions for n=4
..1..0..1..1..0..1....0..1..1..1..1..0....0..1..1..1..1..1....1..0..1..1..1..0
..1..1..1..1..1..1....1..1..1..1..0..1....1..1..0..1..1..0....1..1..1..1..0..1
..1..1..1..1..1..1....1..1..1..1..1..1....1..1..1..1..0..1....1..1..1..1..1..1
..1..1..1..1..0..1....1..1..1..1..1..1....0..1..1..1..1..1....0..1..1..1..1..1
..1..1..1..1..1..1....1..1..0..1..1..1....1..1..0..1..1..1....1..1..1..1..0..1
..1..1..1..0..1..1....1..0..1..1..1..0....1..1..1..0..1..1....1..0..1..1..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|