A235829 Number of (n+1)X(2+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

549, 8160, 110923, 1378463, 16385455, 187651928, 2100282123, 23113626964, 251566008413, 2717152701688, 29200663712707, 312765530573453, 3342753914724018, 35676421518532748, 380426763089559131

Offset

1,1

Comments

Column 2 of A235833

Links

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

R. H. Hardin, Empirical recurrence of order 84

Formula

Empirical recurrence of order 84 (see link above)

Example

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

Crossrefs

Sequence in context: A245957 A352543 A206506 * A235834 A235585 A210399

Adjacent sequences: A235826 A235827 A235828 * A235830 A235831 A235832

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved