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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
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 14 2013
STATUS
approved