A236724 Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock equal

1517, 6469, 26724, 127113, 607539, 3160902, 16715765, 93822025, 532796164, 3156424373, 18762427625, 114987855754, 702710730811, 4394295093193, 27310198108886, 172840791889181, 1085768427192305, 6923023164053098

Offset

1,1

Comments

Column 4 of A236728

Links

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

Example

Some solutions for n=4
..2..1..0..1..0....2..0..0..1..2....2..1..1..1..2....2..1..0..0..1
..1..2..1..2..1....0..2..2..1..2....1..2..0..2..1....1..1..1..2..0
..0..1..2..1..2....1..1..1..0..1....1..2..0..2..1....0..1..0..0..1
..1..2..1..2..1....2..2..2..1..2....0..1..1..1..2....1..1..1..2..0
..1..2..1..2..1....2..2..2..1..2....1..2..2..2..1....0..1..0..0..1

Crossrefs

Sequence in context: A031810 A020415 A257753 * A206654 A356767 A112641

Adjacent sequences: A236721 A236722 A236723 * A236725 A236726 A236727

Keyword

nonn

Author

R. H. Hardin, Jan 30 2014

Status

approved