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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

%I

%S 25,182,182,1308,2829,1308,9455,43091,43091,9455,68201,661963,1386131,

%T 661963,68201,492373,10137464,45071990,45071990,10137464,492373,

%U 3553425,155490654,1460712837,3111914707,1460712837,155490654,3553425,25648639

%N 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

%C Table starts

%C .......25.........182...........1308..............9455................68201

%C ......182........2829..........43091............661963.............10137464

%C .....1308.......43091........1386131..........45071990...........1460712837

%C .....9455......661963.......45071990........3111914707.........213959648565

%C ....68201....10137464.....1460712837......213959648565.......31192434742293

%C ...492373...155490654....47417927307....14741920546390.....4558499131132306

%C ..3553425..2383064182..1538049629157..1014683000461958...665390868679472699

%C .25648639.36538359367.49909370504583.69877891568505574.97186568439693174719

%H R. H. Hardin, <a href="/A209858/b209858.txt">Table of n, a(n) for n = 1..144</a>

%e Some solutions for n=4 k=3

%e ..1..2..1..1....2..3..3..0....1..3..3..3....1..1..2..0....0..1..0..0

%e ..3..1..3..0....0..2..0..1....1..0..1..0....0..3..1..2....0..3..2..3

%e ..0..3..2..0....2..1..2..0....3..3..1..3....0..2..3..1....3..1..0..1

%e ..1..0..2..3....0..2..0..3....1..0..3..0....0..3..0..3....0..1..3..1

%e ..1..3..3..1....0..3..1..3....0..2..2..2....2..3..1..1....1..3..0..1

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Mar 14 2012

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Last modified January 17 03:16 EST 2022. Contains 350377 sequences. (Running on oeis4.)