A254026 Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

1267488, 2035893, 3051110, 6033603, 12254144, 26519069, 45398628, 79505757, 151171642, 294669082, 556904588, 1050666632, 1947133972, 3502846663, 6300247808, 11382424345, 20344476646, 36237438719, 64227305420, 112853340126

Offset

1,1

Comments

Row 7 of A254020

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

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
..0..0..1....0..0..1....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..1....0..0..1....1..0..0....0..0..1....0..1..1....0..0..1....0..1..1
..0..0..1....1..0..0....0..1..1....1..1..1....1..1..0....1..1..1....0..1..0
..1..0..0....1..0..0....0..0..0....1..1..0....1..0..0....0..0..0....1..1..1
..0..1..1....1..0..0....1..1..1....1..1..1....1..1..1....1..1..0....1..0..1
..1..1..0....1..0..0....1..0..1....1..1..1....1..0..0....0..0..1....1..1..1
..0..1..1....1..0..0....1..1..1....1..1..1....1..1..1....0..1..1....1..0..0
..1..0..1....1..0..0....0..1..1....0..0..1....1..1..0....0..0..1....1..1..1

Crossrefs

Sequence in context: A222975 A180624 A081430 * A254019 A254893 A232203

Adjacent sequences: A254023 A254024 A254025 * A254027 A254028 A254029

Keyword

nonn

Author

R. H. Hardin, Jan 22 2015

Status

approved