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A206010 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one, and every 2X2 determinant nonzero 9
24, 78, 78, 228, 300, 228, 722, 980, 980, 722, 2136, 3706, 2728, 3706, 2136, 6688, 12304, 12068, 12068, 12304, 6688, 19976, 45810, 33572, 64224, 33572, 45810, 19976, 62048, 154346, 150396, 211824, 211824, 150396, 154346, 62048, 186560, 567112 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

....24.....78.....228......722.....2136......6688......19976.......62048

....78....300.....980.....3706....12304.....45810.....154346......567112

...228....980....2728....12068....33572....150396.....419108.....1895206

...722...3706...12068....64224...211824...1159120....3850160....21563332

..2136..12304...33572...211824...566288...3844878...10015204....72882376

..6688..45810..150396..1159120..3844878..32546974..107546742...986871314

.19976.154346..419108..3850160.10015204.107546742..262845336..3293852332

.62048.567112.1895206.21563332.72882376.986871314.3293852332.51670233144

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..312

EXAMPLE

Some solutions for n=4 k=3

..1..0..1..1....1..1..1..0....1..2..1..1....0..1..0..2....2..2..2..1

..1..1..1..2....1..2..1..2....1..1..1..0....1..1..1..1....1..2..1..1

..2..1..2..2....2..2..2..2....1..2..1..2....2..1..2..0....1..1..1..0

..2..2..2..1....1..2..0..2....1..1..1..1....2..2..2..2....0..1..2..2

..2..0..1..1....2..2..2..2....0..1..2..0....0..1..2..1....1..1..1..2

CROSSREFS

Sequence in context: A048352 A144459 A290710 * A124140 A206003 A143839

Adjacent sequences:  A206007 A206008 A206009 * A206011 A206012 A206013

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 02 2012

STATUS

approved

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Last modified September 25 05:14 EDT 2021. Contains 347652 sequences. (Running on oeis4.)