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A183710
T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock nonsingular.
10
192, 2472, 2472, 31800, 108624, 31800, 409128, 4760784, 4760784, 409128, 5263608, 208772880, 710460576, 208772880, 5263608, 67718760, 9154058448, 106093597920, 106093597920, 9154058448, 67718760, 871232952, 401390133264, 15840740585184
OFFSET
1,1
COMMENTS
Table starts
...........192................2472.....................31800
..........2472..............108624...................4760784
.........31800.............4760784.................710460576
........409128...........208772880..............106093597920
.......5263608..........9154058448............15840740585184
......67718760........401390133264..........2365244332190880
.....871232952......17600152230096........353161421431958880
...11208812712.....771732813754128......52731638795200916256
..144206530680...33838983410458320....7873523002759947918432
.1855283342568.1483773801471835152.1175620025708806400583456
LINKS
EXAMPLE
Some solutions for 4X3
..0..2..0....0..2..0....0..2..2....0..2..0....0..2..2....0..2..0....0..2..0
..2..0..2....2..3..3....2..3..2....3..1..3....2..0..3....3..1..1....2..3..1
..0..3..3....1..2..0....1..1..2....3..2..2....1..1..3....3..2..0....1..3..2
..1..1..2....0..3..2....0..2..2....0..3..0....0..1..2....0..2..2....0..3..3
CROSSREFS
Sequence in context: A362510 A251442 A251435 * A183702 A351632 A174384
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Jan 06 2011
STATUS
approved