A235822 Number of (n+1)X(2+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

2896, 91067, 2571976, 64246449, 1503158739, 33037099974, 695342067696, 14101446147064, 277876980687563, 5346144906690659, 100877851354536869, 1872972845896098750, 34312668492254854532, 621608502075983787262

Offset

1,1

Comments

Column 2 of A235824

Links

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

Example

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

Crossrefs

Sequence in context: A281657 A234886 A236655 * A235825 A235580 A285756

Adjacent sequences: A235819 A235820 A235821 * A235823 A235824 A235825

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved