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A204398
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order
9
144, 648, 648, 2952, 4050, 2952, 13448, 27378, 27378, 13448, 61336, 175232, 259808, 175232, 61336, 279752, 1131008, 2196608, 2196608, 1131008, 279752, 1276088, 7311488, 19698336, 25233408, 19698336, 7311488, 1276088, 5820872, 47258642
OFFSET
1,1
COMMENTS
Table starts
.....144.......648........2952........13448..........61336...........279752
.....648......4050.......27378.......175232........1131008..........7311488
....2952.....27378......259808......2196608.......19698336........174658050
...13448....175232.....2196608.....25233408......313801352.......3834777888
...61336...1131008....19698336....313801352.....5406738528......91301191200
..279752...7311488...174658050...3834777888....91301191200....2134049909922
.1276088..47258642..1547710600..46611372488..1536831498888...49709204045442
.5820872.305390898.13756760192.569195419058.26029238052168.1165483158963362
LINKS
EXAMPLE
Some solutions for n=3 k=3
..0..0..1..0..1....0..0..1..1..1....0..1..0..1..1....0..0..0..1..1
..1..1..1..1..0....1..0..0..0..0....1..1..0..1..1....0..1..1..0..0
..0..1..0..1..0....1..0..1..1..1....1..0..0..0..0....1..0..0..1..1
..0..1..0..1..0....1..1..1..0..0....1..0..1..0..1....0..1..1..1..0
..0..0..1..1..0....0..0..0..1..0....1..1..1..0..1....1..0..0..0..1
CROSSREFS
Sequence in context: A017522 A180413 A137885 * A204391 A233903 A233897
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 15 2012
STATUS
approved