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A220803
Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and vertical neighbors in a random 0..3 nX4 array
0
16, 256, 4096, 62648, 1048576, 16777216, 268435456, 4294967296, 68700598768, 1099511627776, 17592186044416, 281474976710656, 4503599627370496, 72057490800855040, 1152921504606846976
OFFSET
1,1
COMMENTS
Column 4 of A220805
EXAMPLE
Some solutions for n=3
..0..1..0..0....1..1..1..1....1..0..1..1....0..1..1..0....0..0..1..1
..1..1..1..1....1..0..0..1....1..0..1..0....0..1..1..1....0..1..1..0
..1..1..0..1....1..1..1..0....0..1..0..0....1..0..1..0....1..0..1..0
CROSSREFS
Sequence in context: A267792 A220252 A267976 * A229101 A220175 A001025
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 21 2012
STATUS
approved