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A265636 Number of 2 X n 0..2*n-1 arrays with upper left zero and lower right 2*n-1 and each element differing from its horizontal, diagonal and antidiagonal neighbors by a power of two. 1
1, 0, 64, 559, 10444, 154825, 2325672, 32134921, 1147830996, 27155305770, 705652093502, 13954523202055, 385113044700852, 8391065973567203, 193546379545559324, 4212282964238008204, 146184585283154036226 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Row 2 of A265635.
LINKS
EXAMPLE
Some solutions for n=4
..0..4..5..7....0..1..5..1....0..4..3..1....0..4..5..4....0..4..6..7
..2..1..3..7....2..4..3..7....0..4..5..7....6..4..5..7....3..2..3..7
CROSSREFS
Cf. A265635.
Sequence in context: A200841 A247929 A070054 * A209787 A247841 A209780
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 11 2015
STATUS
approved

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Last modified May 23 14:50 EDT 2024. Contains 372763 sequences. (Running on oeis4.)