A253658 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally, vertically and nw-se diagonally

23524, 181308, 2113406, 21509980, 213776286, 2149355346, 21597168872, 212331840928, 2118953225888, 21018774727072, 207807555539492, 2058146122078016, 20392160021728370, 201460156911473766

Offset

1,1

Comments

Column 4 of A253662

Links

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

Example

Some solutions for n=2
..2..1..0..0..1....2..1..0..2..0....1..0..2..2..0....1..0..0..2..1
..2..0..2..0..1....1..0..2..1..0....2..0..0..0..1....0..1..0..0..1
..0..2..1..1..0....2..2..0..2..2....2..0..2..1..2....2..1..0..1..1

Crossrefs

Sequence in context: A237528 A234441 A253310 * A253728 A227483 A237508

Adjacent sequences: A253655 A253656 A253657 * A253659 A253660 A253661

Keyword

nonn

Author

R. H. Hardin, Jan 07 2015

Status

approved