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A238180 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock equal 9
81, 423, 423, 2329, 5321, 2329, 13447, 69023, 69023, 13447, 79641, 938601, 2027833, 938601, 79641, 479703, 12951743, 62220767, 62220767, 12951743, 479703, 2918233, 180345769, 1917124097, 4299264833, 1917124097, 180345769, 2918233, 17859079 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......81.........423...........2329.............13447.................79641

......423........5321..........69023............938601..............12951743

.....2329.......69023........2027833..........62220767............1917124097

....13447......938601.......62220767........4299264833..........296231759327

....79641....12951743.....1917124097......296231759327........45437916131409

...479703...180345769....59356544695....20477016435713......6990206222515407

..2918233..2520461647..1839517772097..1415323543601575...1074790095990669977

.17859079.35289713177.57041499462367.97848393158941641.165289763647441313927

LINKS

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

FORMULA

Empirical for column k:

k=1: a(n) = 10*a(n-1) -22*a(n-2) -20*a(n-3) +63*a(n-4) -6*a(n-5) -24*a(n-6)

k=2: [order 8]

k=3: [order 17]

k=4: [order 34]

k=5: [order 84]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A236148 A205986 A206668 * A206414 A205979 A206661

Adjacent sequences:  A238177 A238178 A238179 * A238181 A238182 A238183

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 19 2014

STATUS

approved

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Last modified January 18 11:57 EST 2022. Contains 350455 sequences. (Running on oeis4.)