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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 9
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 (list; table; graph; refs; listen; history; text; internal format)
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

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Last modified August 16 05:55 EDT 2022. Contains 356160 sequences. (Running on oeis4.)