A254559 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

1964388, 4537801, 10616893, 27729322, 59711718, 159929222, 479026957, 1334951110, 3821527067, 10456814300, 27133126461, 69996188662, 182153903591, 475965650328, 1260109188309, 3363690275867, 9040436176049, 24437292600358

Offset

1,1

Comments

Row 7 of A254553

Links

R. H. Hardin, Table of n, a(n) for n = 1..203

Example

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

Crossrefs

Sequence in context: A251961 A067454 A254552 * A254482 A219434 A345626

Adjacent sequences: A254556 A254557 A254558 * A254560 A254561 A254562

Keyword

nonn

Author

R. H. Hardin, Feb 01 2015

Status

approved