A254809 Number of (6+2) X (n+2) 0..1 arrays with every 3 X 3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

618856, 1478353, 3633517, 11139423, 34629826, 96309005, 253515215, 546611324, 1453718727, 3872678172, 10934893149, 29405854211, 82990838418, 235773962736, 678424563839, 1952002735040, 5593731744034, 16092673783002, 46146511621644

Offset

1,1

Comments

Row 6 of A254804.

Links

R. H. Hardin, Table of n, a(n) for n = 1..122

Example

Some solutions for n=1
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....1..0..0
..1..1..1....0..1..0....0..1..0....0..0..1....0..0..0....0..0..0....0..0..1
..0..0..0....1..1..1....1..0..1....0..1..0....1..0..0....0..1..0....0..1..0
..1..0..1....0..0..0....1..0..1....1..0..1....1..1..0....1..1..1....1..1..1
..1..1..1....1..0..1....1..1..1....1..0..1....1..1..0....0..0..0....1..1..1
..1..0..0....0..1..1....1..0..0....1..1..1....1..0..0....1..1..1....0..1..0
..1..1..1....0..1..0....1..1..1....1..1..0....0..1..1....0..1..0....1..1..0
..1..1..1....0..1..1....1..1..1....0..1..0....1..1..1....0..1..1....1..0..1

Crossrefs

Cf. A254804.

Sequence in context: A122131 A238053 A254802 * A253818 A341891 A341892

Adjacent sequences: A254806 A254807 A254808 * A254810 A254811 A254812

Keyword

nonn

Author

R. H. Hardin, Feb 08 2015

Status

approved