A237698 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

1186, 7562, 49152, 333508, 2234136, 14991412, 100790676, 681668756, 4585208960, 30833533736, 207687511796, 1402048789416, 9438312729002, 63517027029228, 427982336753074, 2886242240243372, 19435769390492458, 130855004505569972

Offset

1,1

Comments

Column 3 of A237703

Links

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

Example

Some solutions for n=3
..2..0..2..0....2..1..1..1....0..0..0..1....2..2..2..2....1..0..1..0
..1..2..2..1....0..0..0..1....1..2..2..2....2..1..1..2....1..1..0..2
..1..1..1..0....2..2..1..2....0..1..0..2....0..2..1..2....0..0..0..0
..1..1..2..0....0..1..1..2....1..1..2..1....0..2..1..1....2..1..1..0

Crossrefs

Sequence in context: A205994 A345540 A345792 * A345664 A052236 A342066

Adjacent sequences: A237695 A237696 A237697 * A237699 A237700 A237701

Keyword

nonn

Author

R. H. Hardin, Feb 11 2014

Status

approved