|
|
A254813
|
|
Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically
|
|
1
|
|
|
2703, 15848, 95110, 522294, 2691838, 13380696, 64480314, 303930381, 1410213321, 6456146026, 29274922610, 131644498910, 588051565327, 2611848137632, 11544090756579, 50807250907962, 222774823957704, 973567869024207
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Column 2 of A254819
|
|
LINKS
|
R. H. Hardin, Table of n, a(n) for n = 1..210
|
|
EXAMPLE
|
Some solutions for n=3
..0..0..0..1....0..1..0..1....0..0..0..1....0..1..0..1....0..1..0..0
..0..0..1..0....1..0..1..0....0..1..0..0....1..0..0..1....0..0..1..0
..0..0..1..1....0..0..1..1....0..0..0..1....1..0..1..0....1..0..0..1
..0..1..1..0....0..1..1..1....0..0..0..1....0..1..1..0....1..1..1..1
..1..0..1..0....1..1..0..1....1..1..1..1....1..1..1..1....0..1..1..0
|
|
CROSSREFS
|
Sequence in context: A214016 A254513 A254506 * A358430 A270542 A250615
Adjacent sequences: A254810 A254811 A254812 * A254814 A254815 A254816
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
R. H. Hardin, Feb 08 2015
|
|
STATUS
|
approved
|
|
|
|