A237394 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal.

7172, 114034, 1794402, 30590608, 514064312, 8872195706, 152180119484, 2639996468928, 45688402987094, 795090776212578, 13827088054162172, 241212549191101972, 4208384052189989236, 73571217561960370602

Offset

1,1

Comments

Column 3 of A237398

Links

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

Example

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

Crossrefs

Sequence in context: A214336 A364176 A279529 * A028541 A159223 A143193

Adjacent sequences: A237391 A237392 A237393 * A237395 A237396 A237397

Keyword

nonn

Author

R. H. Hardin, Feb 07 2014

Status

approved