A237534 Number of (n+1)X(3+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock equal

11602, 330210, 9080246, 266120870, 7718716424, 228011672782, 6746760123582, 201303029854346, 6028678550818162, 181445164658724640, 5479235823888294194, 166005872557913572654, 5042335321716858992326, 153503802518975275019802

Offset

1,1

Comments

Column 3 of A237538

Links

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

Example

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

Crossrefs

Sequence in context: A218105 A226905 A162865 * A049051 A250242 A231321

Adjacent sequences: A237531 A237532 A237533 * A237535 A237536 A237537

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved