A209736 T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having distinct edge sums

22, 124, 124, 696, 1096, 696, 3912, 9712, 9712, 3912, 21976, 86744, 137888, 86744, 21976, 123480, 775096, 1995752, 1995752, 775096, 123480, 693752, 6933120, 28927984, 47572464, 28927984, 6933120, 693752, 3897880, 62007896, 420545824

Offset

1,1

Comments

Table starts

......22.......124.........696...........3912............21976

.....124......1096........9712..........86744...........775096

.....696......9712......137888........1995752.........28927984

....3912.....86744.....1995752.......47572464.......1138541280

...21976....775096....28927984.....1138541280......45147495264

..123480...6933120...420545824....27425792944....1809791149768

..693752..62007896..6111765608...660346502176...72515584004736

.3897880.554698328.88883321584.15926642688032.2914488537817408

Links

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

Example

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

Crossrefs

Sequence in context: A044735 A247701 A039439 * A209729 A252835 A220622

Adjacent sequences: A209733 A209734 A209735 * A209737 A209738 A209739

Keyword

nonn,tabl

Author

R. H. Hardin Mar 12 2012

Status

approved