A238149 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

1608, 15800, 165780, 1792226, 18918620, 202875630, 2177434900, 23302931502, 247341832408, 2649887010098, 28404840743328, 303472276024264, 3232102394981984, 34598942786178958, 370449222024081488

Offset

1,1

Comments

Column 2 of A238155

Links

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

R. H. Hardin, Empirical recurrence of order 56

Formula

Empirical recurrence of order 56 (see link above)

Example

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

Crossrefs

Sequence in context: A224947 A098193 A064251 * A023685 A301938 A352545

Adjacent sequences: A238146 A238147 A238148 * A238150 A238151 A238152

Keyword

nonn

Author

R. H. Hardin, Feb 18 2014

Status

approved