A235576 Number of (n+1)X(3+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order rowwise and columnwise.

28978, 3103656, 317142694, 28760293894, 2318212983882, 166487069932858, 10857138929700404, 650809497689548858, 36350010705252923052, 1909892977985471316274, 95227363392815469480914

Offset

1,1

Comments

Column 3 of A235577

Links

R. H. Hardin, Table of n, a(n) for n = 1..112

Example

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

Crossrefs

Sequence in context: A364720 A235820 A235817 * A206017 A250762 A249465

Adjacent sequences: A235573 A235574 A235575 * A235577 A235578 A235579

Keyword

nonn

Author

R. H. Hardin, Jan 12 2014

Status

approved