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A233792 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 (11 maximizes T(1,1)) 9
48, 188, 188, 720, 864, 720, 2856, 3932, 3932, 2856, 11040, 19396, 20816, 19396, 11040, 43888, 93100, 125976, 125976, 93100, 43888, 169920, 479628, 716768, 966892, 716768, 479628, 169920, 675744, 2368972, 4674280, 6892448, 6892448, 4674280 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......48.......188........720.........2856.........11040...........43888

......188.......864.......3932........19396.........93100..........479628

......720......3932......20816.......125976........716768.........4674280

.....2856.....19396.....125976.......966892.......6892448........58623880

....11040.....93100.....716768......6892448......58298272.......635439176

....43888....479628....4674280.....58623880.....635439176......9169500236

...169920...2368972...27765752....443965172....5726453720....106891645888

...675744..12497004..190316292...4064000052...69211180340...1738779775140

..2616960..62641260.1159969064..31925115348..649660154664..21208274486100

.10407872.334456748.8197609072.306087278904.8455130486096.376882661513356

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..180

FORMULA

Empirical for column k:

k=1: a(n) = 18*a(n-2) -40*a(n-4)

k=2: [order 11]

k=3: [order 34]

EXAMPLE

Some solutions for n=3 k=4

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

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

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

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

CROSSREFS

Sequence in context: A233675 A005911 A130566 * A233967 A233785 A233960

Adjacent sequences:  A233789 A233790 A233791 * A233793 A233794 A233795

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Dec 15 2013

STATUS

approved

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Last modified August 11 06:20 EDT 2020. Contains 336422 sequences. (Running on oeis4.)