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A187676 T(n,k) = Number of (n+2) X (k+2) 0..3 arrays with no 2 X 2 subblock sum equal to any diagonal or antidiagonal neighbor 2 X 2 subblock sum. 3
192960, 9136352, 9136352, 433713824, 1292583020, 433713824, 20581985952, 184351404608, 184351404608, 20581985952, 976666568320, 26257519475028, 79410378172576, 26257519475028, 976666568320, 46345923682624 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.........192960..........9136352.........433713824.......20581985952
........9136352.......1292583020......184351404608....26257519475028
......433713824.....184351404608....79410378172576.34116783462382978
....20581985952...26257519475028.34116783462382978
...976666568320.3739210796619416
.46345923682624
LINKS
EXAMPLE
Some solutions for 5 X 4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..2..2..0..2....0..2..0..2....0..2..0..2....2..2..0..2....0..2..0..1
..1..1..3..3....0..2..3..0....1..1..0..2....1..1..0..1....0..3..3..1
..0..0..1..0....1..1..2..0....3..3..2..3....3..0..1..2....1..2..2..1
CROSSREFS
Sequence in context: A204228 A270971 A234455 * A187674 A252950 A250689
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 12 2011
STATUS
approved

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Last modified July 18 04:59 EDT 2024. Contains 374377 sequences. (Running on oeis4.)