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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 1
1517, 6469, 26724, 127113, 607539, 3160902, 16715765, 93822025, 532796164, 3156424373, 18762427625, 114987855754, 702710730811, 4394295093193, 27310198108886, 172840791889181, 1085768427192305, 6923023164053098 (list; graph; refs; listen; history; text; internal format)
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 A112641 A203386

Adjacent sequences:  A236721 A236722 A236723 * A236725 A236726 A236727

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 30 2014

STATUS

approved

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Last modified August 4 08:25 EDT 2020. Contains 336201 sequences. (Running on oeis4.)