A209716 T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having distinct clockwise edge differences

24, 175, 175, 1241, 2710, 1241, 8876, 40600, 40600, 8876, 63280, 614935, 1277340, 614935, 63280, 451762, 9278940, 40731729, 40731729, 9278940, 451762, 3223192, 140274002, 1293734407, 2744311427, 1293734407, 140274002, 3223192, 23003132

Offset

1,1

Comments

Table starts

.......24.........175...........1241..............8876................63280

......175........2710..........40600............614935..............9278940

.....1241.......40600........1277340..........40731729...........1293734407

.....8876......614935.......40731729........2744311427.........183988612894

....63280.....9278940.....1293734407......183988612894.......26024000948100

...451762...140274002....41170011836....12365282426546.....3690894707522275

..3223192..2118517533..1308905451923...830023337140244...522757733883587522

.23003132.32012611741.41634764453267.55752055566749390.74095286689410395475

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

Some solutions for n=4 k=3
..1..0..3..2....0..0..1..0....0..1..0..3....3..2..2..0....1..0..0..0
..3..2..3..0....1..3..3..3....2..3..1..0....1..3..0..3....0..3..1..3
..0..2..0..1....0..0..1..0....0..3..0..3....0..1..3..1....1..0..1..0
..2..3..1..3....2..3..1..3....0..1..0..1....1..3..0..3....1..3..3..1
..2..0..3..2....0..3..0..3....3..3..3..1....1..0..1..1....1..0..1..2

Crossrefs

Sequence in context: A272125 A166756 A268623 * A209709 A375330 A209986

Adjacent sequences: A209713 A209714 A209715 * A209717 A209718 A209719

Keyword

nonn,tabl

Author

R. H. Hardin Mar 11 2012

Status

approved