A235826 Number of (3+1)X(n+1) 0..3 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

29902, 2571976, 207321076, 14451129835, 941802350503, 56662350372800, 3224541434122084, 174047224603038838, 8999334817862358942, 447758527229610262781, 21553702930893564231178, 1007545823854417007565664

Offset

1,1

Comments

Row 3 of A235824

Links

R. H. Hardin, Table of n, a(n) for n = 1..102

Example

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

Crossrefs

Sequence in context: A251681 A183852 A274358 * A235823 A235581 A224612

Adjacent sequences: A235823 A235824 A235825 * A235827 A235828 A235829

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved