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A238063 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 6
256, 1910, 1910, 14429, 26634, 14429, 109386, 373572, 373572, 109386, 828750, 5318512, 9814274, 5318512, 828750, 6261150, 75397960, 262520800, 262520800, 75397960, 6261150, 47346273, 1065216948, 6977336094, 13354392266, 6977336094 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........256..........1910...........14429...........109386...........828750

........1910.........26634..........373572..........5318512.........75397960

.......14429........373572.........9814274........262520800.......6977336094

......109386.......5318512.......262520800......13354392266.....671554527276

......828750......75397960......6977336094.....671554527276...63695813996436

.....6261150....1065216948....184559576240...33609979270956.5998978739140238

....47346273...15062600632...4896168992178.1685585654315194

...358316792..213664795084.130300801140848

..2711887788.3026358430964

.20506077144

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 26]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A206745 A237791 A237786 * A238058 A235972 A235965

Adjacent sequences:  A238060 A238061 A238062 * A238064 A238065 A238066

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 17 2014

STATUS

approved

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Last modified July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)