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A233724 T(n,k)=Number of (n+1)X(k+1) 0..7 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 26 (26 maximizes T(1,1)) 7
280, 1820, 1820, 11016, 13588, 11016, 68828, 101644, 101644, 68828, 423220, 820524, 998048, 820524, 423220, 2624872, 6622988, 10950676, 10950676, 6622988, 2624872, 16201200, 54865696, 122218188, 170070448, 122218188, 54865696, 16201200 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........280.........1820..........11016...........68828...........423220

.......1820........13588.........101644..........820524..........6622988

......11016.......101644.........998048........10950676........122218188

......68828.......820524.......10950676.......170070448.......2734167036

.....423220......6622988......122218188......2734167036......64803794224

....2624872.....54865696.....1417835712.....46522687660....1650535163756

...16201200....453172200....16483703564....796715658452...42662876957452

..100277820...3781440536...194721929436..13995270446204.1138753868813024

..619644916..31469076952..2296636990520.245408211398092

.3832773404.263046916084.27285817326088

LINKS

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

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 16]

k=2: [order 90]

EXAMPLE

Some solutions for n=2 k=4

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

..2..3..2..2..4....4..1..4..1..4....6..6..6..5..7....0..3..4..5..2

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

CROSSREFS

Sequence in context: A234911 A234905 A187178 * A233718 A272982 A234458

Adjacent sequences:  A233721 A233722 A233723 * A233725 A233726 A233727

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Dec 15 2013

STATUS

approved

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Last modified July 25 07:08 EDT 2021. Contains 346284 sequences. (Running on oeis4.)