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A206189 Number of (n+1)X(n+1) 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two 0

%I #5 Mar 31 2012 12:37:10

%S 124,18172,13173864,46704516192,806129409968360,67595116900832029672,

%T 27501116060342502948845780,54245028887229452020237690008284

%N Number of (n+1)X(n+1) 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two

%C Diagonal of A206197

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 04 2012

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)