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A265488 Number of (3n-2)X2 0..6n-5 arrays with upper left zero and lower right 6n-5 and each element differing from its horizontal, vertical and diagonal neighbors by a power of two. 1
1, 12, 1030, 298764, 83948008, 22511356876, 10087240306899, 3527678938392395, 1384849739444093464, 509526476766763110063, 197694082692466208850553, 132949897804861666617140704, 58944850608913545191419115404 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 2 of A265494 (terms of the form 3n-2).
LINKS
EXAMPLE
Some solutions for n=2
..0..1....0..4....0..1....0..1....0..4....0..4....0..4....0..1....0..4....0..4
..1..2....4..2....1..2....4..2....1..2....4..2....4..2....4..2....1..2....4..2
..5..3....5..6....5..3....5..3....5..3....5..3....5..6....5..6....5..3....5..3
..3..7....3..7....6..7....6..7....6..7....3..7....6..7....3..7....3..7....6..7
CROSSREFS
Cf. A265494.
Sequence in context: A123283 A272855 A365571 * A232912 A004812 A088671
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 09 2015
STATUS
approved

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Last modified July 21 23:34 EDT 2024. Contains 374478 sequences. (Running on oeis4.)