A237244 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

1488, 12600, 108652, 974864, 8433384, 72877504, 629104640, 5642567936, 48822536832, 421991535616, 3643475019776, 32666380795904, 282702867210240, 2444023059595264, 21105706476486656, 189154485612609536

Offset

1,1

Comments

Column 3 of A237249

Links

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

Formula

Empirical: a(n) = 11576*a(n-4) -33493888*a(n-8) for n>11

Example

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

Crossrefs

Sequence in context: A351675 A317593 A257760 * A028515 A288727 A137705

Adjacent sequences: A237241 A237242 A237243 * A237245 A237246 A237247

Keyword

nonn

Author

R. H. Hardin, Feb 05 2014

Status

approved