A202636 T(n,k)=Number of nXk 0..3 arrays with adjacent row and column sums unequal

4, 12, 12, 36, 184, 36, 108, 2428, 2428, 108, 324, 32676, 143028, 32676, 324, 972, 443100, 8196796, 8196796, 443100, 972, 2916, 5967248, 464590190, 1960824272, 464590190, 5967248, 2916, 8748, 80018540, 26143599304, 459796683544

Offset

1,1

Comments

Table starts

.....4.........12............36.............108.............324.............972

....12........184..........2428...........32676..........443100.........5967248

....36.......2428........143028.........8196796.......464590190.....26143599304

...108......32676.......8196796......1960824272....459796683544.106682611433736

...324.....443100.....464590190....459796683544.443471777729100

...972....5967248...26143599304.106682611433736

..2916...80018540.1464347535012

..8748.1071819720

.26244

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

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

Crossrefs

Sequence in context: A261695 A209047 A209019 * A239194 A355801 A357727

Adjacent sequences: A202633 A202634 A202635 * A202637 A202638 A202639

Keyword

nonn,tabl

Author

R. H. Hardin Dec 21 2011

Status

approved