A236806 Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal

17481, 410305, 9558409, 270610375, 6612746409, 203606804707, 5094225962785, 167431587932179, 4238424064205001, 146743496294875195, 3736375181313140689, 134871797219330857075, 3444806969589767397849, 128484283442135059854667

Offset

1,1

Comments

Column 5 of A236809

Links

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

Formula

Empirical: a(n) = 6*a(n-1) +2037*a(n-2) -12282*a(n-3) -1251404*a(n-4) +7631304*a(n-5) +222376028*a(n-6) -1410692088*a(n-7) +774758880*a(n-8) +9534803520*a(n-9) -17365107200*a(n-10) -5340748800*a(n-11) +29872128000*a(n-12) -16293888000*a(n-13)

Example

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

Crossrefs

Sequence in context: A043850 A043866 A043875 * A048256 A303996 A251641

Adjacent sequences: A236803 A236804 A236805 * A236807 A236808 A236809

Keyword

nonn

Author

R. H. Hardin, Jan 31 2014

Status

approved