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A221665 Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nX4 array 0

%I

%S 16,256,3772,63200,1048576,16777216,268281856,4294967296,68702508544,

%T 1099511627776,17592133540864,281474976710656,4503599627370496

%N Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nX4 array

%C Column 4 of A221666

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 21 2013

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Last modified May 19 05:04 EDT 2022. Contains 353826 sequences. (Running on oeis4.)