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A253485 Number of (4+1)X(n+1) 0..2 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically 1

%I

%S 27000,1066300,44943722,1878758740,78770049974,3299718630574,

%T 138306215163096,5795836568371696,242904782424601668,

%U 10179772843302464230,426626399166621668992,17879460458074006160518

%N Number of (4+1)X(n+1) 0..2 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically

%C Row 4 of A253482

%H R. H. Hardin, <a href="/A253485/b253485.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 02 2015

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Last modified July 17 21:24 EDT 2019. Contains 325109 sequences. (Running on oeis4.)