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A223795 Number of n X n 0..3 arrays with rows and antidiagonals unimodal 1
4, 256, 110116, 151310069, 453578376041, 2401987689157097, 19618352087687868206, 225161556703631799074083, 3396567436573176749810085543, 64088930629934993395801694394536 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A223801

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..11

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A223844 A122249 A326556 * A207275 A207473 A223658

Adjacent sequences:  A223792 A223793 A223794 * A223796 A223797 A223798

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 27 2013

STATUS

approved

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Last modified May 16 13:45 EDT 2022. Contains 353704 sequences. (Running on oeis4.)