A235834 Number of (2+1)X(n+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, 112146, 1403872, 16791083, 193298612, 2172780930, 23997087333, 261931859433, 2835526643999, 30525627155521, 327380922155653, 3502268216780710, 37404149072226832, 399038981651038586

Offset

1,1

Comments

Row 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..0..0....1..2..2..2....2..1..2..1....0..1..0..1....2..0..2..0
..0..2..1..1....1..0..1..0....0..1..0..1....1..1..2..2....2..1..2..0
..0..1..0..1....1..0..2..0....1..0..1..1....2..1..2..0....1..1..2..2

Crossrefs

Sequence in context: A352543 A206506 A235829 * A235585 A210399 A232314

Adjacent sequences: A235831 A235832 A235833 * A235835 A235836 A235837

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved