login
A254506
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, vertically and ne-to-sw antidiagonally
1
2703, 12324, 68832, 356061, 1731335, 8282251, 38770022, 178707667, 815255701, 3683796336, 16525980573, 73671578242, 326677241389, 1441862858957, 6338127433805, 27761171502804, 121206014851274, 527673136282231
OFFSET
1,1
COMMENTS
Column 2 of A254512
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1..0....0..1..0..0....0..1..1..0....0..0..0..1....0..0..0..0
..0..0..0..0....1..0..0..1....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..1..0..1....0..0..0..1....1..0..0..0
..1..0..0..0....1..0..0..1....0..1..0..1....1..0..0..0....1..0..1..0
..0..1..0..0....1..1..1..1....0..0..0..0....0..0..0..1....0..1..0..1
CROSSREFS
Sequence in context: A333130 A214016 A254513 * A254813 A358430 A270542
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2015
STATUS
approved