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A237076 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median of every 2X2 subblock equal 9
256, 2132, 2132, 15882, 51000, 15882, 128988, 1046822, 1046822, 128988, 1042300, 23830240, 53940782, 23830240, 1042300, 8613338, 540277188, 3263989086, 3263989086, 540277188, 8613338, 71747464, 12551185804, 195683299844 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....256........2132..........15882............128988..............1042300

....2132.......51000........1046822..........23830240............540277188

...15882.....1046822.......53940782........3263989086.........195683299844

..128988....23830240.....3263989086......540145357880.......88307088989348

.1042300...540277188...195683299844....88307088989348....39085052507056252

.8613338.12551185804.12159520038142.14967248359057988.17922505416903364948

LINKS

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

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 12]

k=2: [order 26]

k=3: [order 62]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A205954 A205466 A205459 * A237069 A346961 A206063

Adjacent sequences:  A237073 A237074 A237075 * A237077 A237078 A237079

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 03 2014

STATUS

approved

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Last modified January 23 15:33 EST 2022. Contains 350514 sequences. (Running on oeis4.)