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A209858 T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences 9
25, 182, 182, 1308, 2829, 1308, 9455, 43091, 43091, 9455, 68201, 661963, 1386131, 661963, 68201, 492373, 10137464, 45071990, 45071990, 10137464, 492373, 3553425, 155490654, 1460712837, 3111914707, 1460712837, 155490654, 3553425, 25648639 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......25.........182...........1308..............9455................68201

......182........2829..........43091............661963.............10137464

.....1308.......43091........1386131..........45071990...........1460712837

.....9455......661963.......45071990........3111914707.........213959648565

....68201....10137464.....1460712837......213959648565.......31192434742293

...492373...155490654....47417927307....14741920546390.....4558499131132306

..3553425..2383064182..1538049629157..1014683000461958...665390868679472699

.25648639.36538359367.49909370504583.69877891568505574.97186568439693174719

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..144

EXAMPLE

Some solutions for n=4 k=3

..1..2..1..1....2..3..3..0....1..3..3..3....1..1..2..0....0..1..0..0

..3..1..3..0....0..2..0..1....1..0..1..0....0..3..1..2....0..3..2..3

..0..3..2..0....2..1..2..0....3..3..1..3....0..2..3..1....3..1..0..1

..1..0..2..3....0..2..0..3....1..0..3..0....0..3..0..3....0..1..3..1

..1..3..3..1....0..3..1..3....0..2..2..2....2..3..1..1....1..3..0..1

CROSSREFS

Sequence in context: A258319 A302562 A264259 * A209851 A330126 A243209

Adjacent sequences:  A209855 A209856 A209857 * A209859 A209860 A209861

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 14 2012

STATUS

approved

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Last modified December 6 17:05 EST 2021. Contains 349567 sequences. (Running on oeis4.)