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A253478 Number of (n+1)X(2+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 558,6804,85280,1066300,13347930,166986430,2089637292,26146542588,

%T 327171117860,4093826224868,51225496342820,640976478054436,

%U 8020442466701434,100358565951977392,1255771461301697900

%N Number of (n+1)X(2+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 Column 2 of A253482

%H R. H. Hardin, <a href="/A253478/b253478.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A253478/a253478.txt">Empirical recurrence of order 88</a>

%F Empirical recurrence of order 88 (see link above)

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 02 2015

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Last modified January 21 10:05 EST 2022. Contains 350476 sequences. (Running on oeis4.)