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A265597 Number of nX4 0..n*4-1 arrays with upper left zero and lower right n*4-1 and each element differing from its horizontal, vertical and antidiagonal neighbors by a power of two. 1

%I

%S 2,8,177,2908,35824,572832,19333806,160881658,5664401710,229732307880,

%T 3100452091943,63631711298155,3224821577173159,36788488008041465,

%U 849761149215404287,34792070819029655772,737955075337274350302

%N Number of nX4 0..n*4-1 arrays with upper left zero and lower right n*4-1 and each element differing from its horizontal, vertical and antidiagonal neighbors by a power of two.

%C Column 4 of A265601.

%H R. H. Hardin, <a href="/A265597/b265597.txt">Table of n, a(n) for n = 1..120</a>

%e Some solutions for n=4

%e ..0..4..8..9....0..2..4..3....0..2..4..6....0..2.10..6....0..1..5..3

%e ..2..6..7..5....1..3..5..7....4..6..8..7....4..6.14.10....2..3..7.11

%e .10..8..9.13....5..1..3.11....5..7..9.11....2.10.12.14....1..5..9.13

%e ..6..7.11.15....9..5..7.15....6..5.13.15....6.14.13.15....9..7.11.15

%Y Cf. A265601.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 10 2015

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Last modified January 24 13:24 EST 2020. Contains 331193 sequences. (Running on oeis4.)