A198642 T(n,k)=Number of 2nX2k 0..2 arrays with values 0..2 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors

4, 36, 36, 376, 2436, 376, 3936, 162776, 162776, 3936, 41216, 10937316, 70145916, 10937316, 41216, 431616, 734979136, 30189380016, 30189380016, 734979136, 431616, 4519936, 49393306556, 13004327687556, 83436203795656, 13004327687556

Offset

1,1

Comments

Table starts

........4............36..............376...............3936..............41216

.......36..........2436...........162776...........10937316..........734979136

......376........162776.........70145916........30189380016.....13004327687556

.....3936......10937316......30189380016.....83436203795656.230598746057340176

....41216.....734979136...13004327687556.230598746057340176

...431616...49393306556.5601924832399656

..4519936.3319433387656

.47333376

Links

R. H. Hardin, Table of n, a(n) for n = 1..39

Example

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

Crossrefs

Sequence in context: A144153 A027644 A174426 * A327998 A274891 A062182

Adjacent sequences: A198639 A198640 A198641 * A198643 A198644 A198645

Keyword

nonn,tabl

Author

R. H. Hardin Oct 27 2011

Status

approved