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A236949 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum of every 2X2 subblock equal 9
256, 2796, 2796, 30698, 112888, 30698, 357316, 4301002, 4301002, 357316, 4195956, 178006252, 534626674, 178006252, 4195956, 50119046, 7270497452, 73196854050, 73196854050, 7270497452, 50119046, 601976968, 302691231316, 9747614152466 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....256.......2796.........30698............357316..............4195956

....2796.....112888.......4301002.........178006252...........7270497452

...30698....4301002.....534626674.......73196854050........9747614152466

..357316..178006252...73196854050....33887916009662....14993765290435528

.4195956.7270497452.9747614152466.14993765290435528.21767431884019104260

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..480

FORMULA

Empirical for column k:

k=1: a(n) = 16*a(n-1) -650*a(n-3) +596*a(n-4) +5184*a(n-5) -1365*a(n-6) -3780*a(n-7)

k=2: [order 10]

k=3: [order 13]

k=4: [order 22]

k=5: [order 34]

k=6: [order 55]

k=7: [order 88]

EXAMPLE

Some solutions for n=2 k=4

..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0

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

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

CROSSREFS

Sequence in context: A205417 A236127 A236124 * A236942 A236137 A236134

Adjacent sequences:  A236946 A236947 A236948 * A236950 A236951 A236952

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 01 2014

STATUS

approved

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Last modified May 27 03:03 EDT 2020. Contains 334647 sequences. (Running on oeis4.)