A223795 Number of n X n 0..3 arrays with rows and antidiagonals unimodal

4, 256, 110116, 151310069, 453578376041, 2401987689157097, 19618352087687868206, 225161556703631799074083, 3396567436573176749810085543, 64088930629934993395801694394536

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