A185923 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant

256, 3516, 3516, 49342, 158806, 49342, 687900, 7232034, 7232034, 687900, 9599032, 328811578, 1079255234, 328811578, 9599032, 133932498, 14927163064, 160170012852, 160170012852, 14927163064, 133932498, 1868731400, 678146728482

Offset

1,1

Comments

Table starts

.........256...........3516............49342............687900

........3516.........158806..........7232034.........328811578

.......49342........7232034.......1079255234......160170012852

......687900......328811578.....160170012852....77659127557452

.....9599032....14927163064...23757227154988.37582792498003078

...133932498...678146728482.3524972742682648

..1868731400.30800191295066

.26074015256

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

Some solutions for 4X3
..0..2..0....0..2..0....0..1..0....0..3..0....0..1..0....0..1..0....0..2..0
..1..0..3....1..0..3....1..0..2....1..0..2....2..0..1....2..2..2....3..0..3
..0..3..2....0..3..1....3..1..0....1..3..3....2..2..1....1..3..3....1..2..2
..0..0..1....2..1..3....0..3..1....3..1..2....2..1..0....2..3..1....1..1..0

Crossrefs

Sequence in context: A185572 A185925 A205281 * A185919 A259320 A247931

Adjacent sequences: A185920 A185921 A185922 * A185924 A185925 A185926

Keyword

nonn,tabl

Author

R. H. Hardin Feb 06 2011

Status

approved