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A233665 T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 26 (26 maximizes T(1,1)) 7
208, 1220, 1220, 6656, 8324, 6656, 37544, 56212, 56212, 37544, 208304, 411848, 501200, 411848, 208304, 1166748, 3007000, 5005852, 5005852, 3007000, 1166748, 6498312, 22597004, 50997688, 71366708, 50997688, 22597004, 6498312, 36324956 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........208........1220..........6656..........37544..........208304

.......1220........8324.........56212.........411848.........3007000

.......6656.......56212........501200........5005852........50997688

......37544......411848.......5005852.......71366708......1053739156

.....208304.....3007000......50997688.....1053739156.....23188813328

....1166748....22597004.....538751292....16463908576....545807710584

....6498312...168812492....5717710176...259162493248..13115038989616

...36324956..1277805668...61553770120..4182001054596.323684938848400

..202569936..9619090052..662422496208.67387441794520

.1131482016.72923111912.7175663136164

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 13]

k=2: [order 74]

EXAMPLE

Some solutions for n=2 k=4

..0..1..4..1..0....1..1..1..1..3....3..4..3..6..5....5..2..2..2..6

..4..1..0..1..4....0..4..0..4..1....3..0..3..2..2....3..5..6..5..6

..0..1..4..1..0....1..4..3..4..5....4..4..3..6..5....0..2..2..2..2

CROSSREFS

Sequence in context: A304281 A234549 A234543 * A233659 A230934 A236272

Adjacent sequences:  A233662 A233663 A233664 * A233666 A233667 A233668

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Dec 14 2013

STATUS

approved

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Last modified November 27 16:35 EST 2021. Contains 349394 sequences. (Running on oeis4.)