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A224267 Number of 7Xn 0..2 arrays with rows and antidiagonals unimodal and columns nondecreasing 1
36, 1296, 24842, 296646, 2485967, 15921905, 83124099, 371699763, 1478187738, 5375576014, 18237850918, 58547208334, 179599458173, 530112786109, 1512954573026, 4190185564746, 11292006460221, 29674041029167 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A224262

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..41

R. H. Hardin, Empirical polynomial of degree 28

FORMULA

Empirical polynomial of degree 28 (see link above)

EXAMPLE

Some solutions for n=3

..0..0..0....0..0..0....0..0..0....0..0..0....0..0..1....1..1..0....0..1..0

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

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

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

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

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

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

CROSSREFS

Sequence in context: A158700 A144128 A223405 * A223924 A224352 A224194

Adjacent sequences:  A224264 A224265 A224266 * A224268 A224269 A224270

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 02 2013

STATUS

approved

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Last modified August 11 15:10 EDT 2022. Contains 356066 sequences. (Running on oeis4.)