A237540 Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

1888, 25280, 344128, 4672896, 63456608, 862467040, 11715351424, 159023453952, 2159737999232, 29352841877120, 398714501823488, 5412158969910144, 73503840800214272, 998985586501116032, 13569728204514266112

Offset

1,1

Comments

Column 2 of A237544

Links

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

Formula

Empirical: a(n) = 33284*a(n-4) +25223312*a(n-8) +9872851088*a(n-12) +1714176739904*a(n-16) +117040615631104*a(n-20) -15333075217254400*a(n-24) +298524650406981632*a(n-28) -1514873805416611840*a(n-32) -6055029689993396224*a(n-36) +62325077822438113280*a(n-40) -94646495250940428288*a(n-44) +39539525251177119744*a(n-48) for n>50

Example

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

Crossrefs

Sequence in context: A190133 A029564 A235295 * A206746 A106764 A157486

Adjacent sequences: A237537 A237538 A237539 * A237541 A237542 A237543

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved