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A210300 T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference 9
112, 1578, 1578, 22212, 78628, 22212, 312704, 3913002, 3913002, 312704, 4402192, 194768054, 688122928, 194768054, 4402192, 61973516, 9694276684, 121040117840, 121040117840, 9694276684, 61973516, 872455004, 482519042626, 21290108702694 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........112.............1578.................22212.....................312704

........1578............78628...............3913002..................194768054

.......22212..........3913002.............688122928...............121040117840

......312704........194768054..........121040117840.............75244563204398

.....4402192.......9694276684........21290108702694..........46773822117508382

....61973516.....482519042626......3744799069935140.......29075895528477825602

...872455004...24016699289368....658686645074030420....18074362569780907584746

.12282307884.1195397128587610.115858857345804835112.11235513600375237582792174

LINKS

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

EXAMPLE

Some solutions for n=4 k=3

..0..3..3..3....2..1..1..0....1..2..3..2....1..0..0..0....1..1..0..0

..2..1..0..1....3..3..0..2....3..1..1..1....0..3..1..2....3..1..3..0

..0..1..1..1....0..0..0..2....3..3..3..1....1..0..1..3....1..0..1..3

..3..3..1..2....3..1..1..2....3..1..3..3....1..3..3..2....2..0..1..3

..3..0..0..0....0..1..0..0....3..1..1..1....1..3..0..2....2..2..1..1

CROSSREFS

Sequence in context: A233115 A188152 A327633 * A210293 A203915 A233884

Adjacent sequences:  A210297 A210298 A210299 * A210301 A210302 A210303

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 19 2012

STATUS

approved

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Last modified November 29 21:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)