A236130 Number of (n+1)X(1+1) 0..3 arrays colored with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock

256, 3184, 39626, 494612, 6174310, 77042610, 961334649, 11996138928, 149695364012, 1867978298572, 23309625772316, 290870232873684, 3629637683704696, 45292593443919928, 565185607861222620

Offset

1,1

Comments

Column 1 of A236133

Links

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

R. H. Hardin, Empirical recurrence of order 50

Formula

Empirical recurrence of order 50 (see link above)

Example

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

Crossrefs

Sequence in context: A205037 A236133 A205033 * A236254 A236251 A344304

Adjacent sequences: A236127 A236128 A236129 * A236131 A236132 A236133

Keyword

nonn

Author

R. H. Hardin, Jan 19 2014

Status

approved