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A220973
Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their king-move neighbors in a random 0..1 nX4 array
1
8, 23, 368, 1972, 12033, 79554, 503607, 3213597, 20509600, 131200351, 838727086, 5361102811, 34276632448, 219139964718, 1400992769305, 8956840667851, 57262934303862, 366093267032756, 2340506776827743, 14963323072215607
OFFSET
1,1
COMMENTS
Column 4 of A220977
LINKS
EXAMPLE
Some solutions for n=3
..1..1..0..1....1..0..0..1....0..0..0..0....0..1..0..1....0..0..1..1
..1..0..0..0....0..0..0..1....0..1..0..0....0..0..0..0....1..0..0..0
..1..1..0..1....1..0..0..1....1..1..0..0....1..1..0..0....1..0..1..0
CROSSREFS
Sequence in context: A303720 A304414 A305949 * A233470 A334720 A172390
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 27 2012
STATUS
approved