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A224198 Number of n X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing 1
4, 160, 16060, 2411246, 451319098, 96914926654, 22835261226043, 5750097317505437, 1521786116504544601, 418628292901694453231, 118789461093773656747975, 34580941641153629118242103 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A224204

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..17

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A264568 A224044 A224275 * A104133 A214007 A248330

Adjacent sequences:  A224195 A224196 A224197 * A224199 A224200 A224201

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 01 2013

STATUS

approved

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Last modified August 15 16:57 EDT 2022. Contains 356148 sequences. (Running on oeis4.)