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A265595
Number of nX2 0..n*2-1 arrays with upper left zero and lower right n*2-1 and each element differing from its horizontal, vertical and antidiagonal neighbors by a power of two.
1
1, 2, 4, 8, 166, 257, 1627, 19283, 90682, 542663, 6657907, 21585283, 151468895, 1794394408, 6074973762, 38138795310, 768443343629, 2396280011230, 16859340797106, 253945311071870, 892229591233283, 6144902621608354
OFFSET
1,2
COMMENTS
Column 2 of A265601.
LINKS
EXAMPLE
All solutions for n=4
..0..1....0..4....0..1....0..4....0..4....0..1....0..4....0..4
..2..3....2..6....2..3....2..3....2..3....2..3....2..3....2..6
..1..5....4..5....4..5....4..5....4..5....4..5....1..5....4..5
..3..7....6..7....6..7....3..7....6..7....3..7....3..7....3..7
CROSSREFS
Cf. A265601.
Sequence in context: A110746 A084010 A203630 * A133036 A083147 A012648
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2015
STATUS
approved