A236723 Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock equal

550, 1956, 6879, 26724, 105206, 437291, 1848980, 8110850, 36063603, 164600818, 757902648, 3556599303, 16776665346, 80262973548, 385100839073, 1867833712028, 9073256041802, 44449997869523, 217924654516054, 1075628687033984

Offset

1,1

Comments

Column 3 of A236728

Links

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

R. H. Hardin, Empirical recurrence of order 81

Formula

Empirical recurrence of order 81 (see link above)

Example

Some solutions for n=5
..2..0..2..0....1..2..0..1....1..2..0..1....2..1..2..1....0..2..1..2
..1..2..1..2....1..1..0..2....0..0..1..1....2..2..0..2....2..0..1..0
..2..2..2..2....2..1..1..0....2..1..1..0....1..2..1..2....0..2..1..2
..1..2..1..2....0..0..1..1....0..0..1..1....0..2..0..2....2..0..1..2
..0..2..2..2....2..1..1..0....2..1..1..2....1..2..1..2....1..1..2..1
..1..2..1..0....0..0..1..1....1..1..0..0....2..0..2..2....2..0..1..2

Crossrefs

Sequence in context: A210399 A232314 A141547 * A189502 A190075 A234415

Adjacent sequences: A236720 A236721 A236722 * A236724 A236725 A236726

Keyword

nonn

Author

R. H. Hardin, Jan 30 2014

Status

approved