A235785 Number of (2+1)X(n+1) 0..2 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

537, 7331, 86691, 922543, 9242949, 88065309, 811287445, 7265948995, 63735420061, 549443735855, 4672613503973, 39287253800941, 327286638371893, 2705376681897273, 22218958397202703, 181488778142157095

Offset

1,1

Comments

Row 2 of A235784

Links

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

R. H. Hardin, Empirical recurrence of order 49

Formula

Empirical recurrence of order 49 (see link above)

Example

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

Crossrefs

Sequence in context: A206067 A183725 A235780 * A235561 A252339 A224742

Adjacent sequences: A235782 A235783 A235784 * A235786 A235787 A235788

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved