A236251 Number of (n+1)X(1+1) 0..3 arrays colored with the maximum plus the upper median plus the lower median of every 2X2 subblock

256, 3208, 40120, 505708, 6373768, 80221804, 1009767552, 12713539468, 160066410336, 2015160447836, 25370112054552, 319404088858652, 4021218129810712, 50625997233104140, 637367333451485952

Offset

1,1

Comments

Column 1 of A236254

Links

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

R. H. Hardin, Empirical recurrence of order 48

Formula

Empirical recurrence of order 48 (see link above)

Example

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

Crossrefs

Sequence in context: A205033 A236130 A236254 * A344304 A070056 A185575

Adjacent sequences: A236248 A236249 A236250 * A236252 A236253 A236254

Keyword

nonn

Author

R. H. Hardin, Jan 21 2014

Status

approved