A254393 Number of (4+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal maximum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

136868, 4766957, 175329586, 6208345944, 222379798148, 7980237415038, 285530733637470, 10224170138575374, 366155468467164564, 13110454447845138796, 469453431201506217004, 16810175913187595698224

Offset

1,1

Comments

Row 4 of A254390

Links

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

Example

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

Crossrefs

Sequence in context: A232143 A237470 A254386 * A253981 A191819 A015071

Adjacent sequences: A254390 A254391 A254392 * A254394 A254395 A254396

Keyword

nonn

Author

R. H. Hardin, Jan 29 2015

Status

approved