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A265635 T(n,k)=Number of nXk 0..n*k-1 arrays with upper left zero and lower right n*k-1 and each element differing from its horizontal, diagonal and antidiagonal neighbors by a power of two. 8
1, 1, 1, 1, 0, 3, 2, 64, 21, 16, 16, 559, 2660, 585, 125, 79, 10444, 85492, 35328, 8463, 1296, 456, 154825, 2331618, 2723409, 5852058, 294394, 16807, 2194, 2325672, 206993090, 1299561587, 3979565339, 962138367, 6639203, 262144, 20801, 32134921 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,6
COMMENTS
Table starts
.....1.......1............1...............2...............16..............79
.....1.......0...........64.............559............10444..........154825
.....3......21.........2660...........85492..........2331618.......206993090
....16.....585........35328.........2723409.......1299561587....361488020990
...125....8463......5852058......3979565339...25336433674079.379828279842232
..1296..294394....962138367....796308532514.2181889044925821
.16807.6639203.498846580538.168471146612539
LINKS
EXAMPLE
Some solutions for n=3 k=4
..0..4..6..4....0..2..3.11....0..1..3..5....0..2.10..2....0..4..3..5
..3..4..3..7....0..4..3..2....9..1..3.11....1..2.10..6....3..4..3..5
..6..7..3.11....0..2..3.11....3..7..9.11....6..2.10.11....3..7..3.11
CROSSREFS
Column 1 is A000272.
Row 1 is A265173.
Sequence in context: A336520 A190286 A063513 * A265619 A298021 A016461
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 11 2015
STATUS
approved

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)