A224284 Number of 5Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing

1024, 160000, 2596992, 21348990, 137489538, 817075668, 4728056658, 26524273813, 141437578159, 706256665798, 3280530467805, 14165878265784, 57028400060821, 214999615263699, 762959963267749, 2561695629991349, 8178284227377456

Offset

1,1

Comments

Row 5 of A224281

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical polynomial of degree 30

Formula

Empirical polynomial of degree 30 (see link above)

Example

Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..2..0..0....0..0..2....0..2..0....1..0..0....1..2..0....1..2..1....2..0..0
..0..0..0....2..2..2....3..3..2....3..3..0....3..3..3....2..2..1....1..1..0
..3..0..0....2..2..0....3..2..1....3..1..0....3..3..1....2..2..3....1..1..0
..1..3..2....2..3..0....3..1..0....1..1..1....3..2..0....3..3..3....1..1..2

Crossrefs

Sequence in context: A224027 A174155 A269205 * A224207 A017033 A017117

Adjacent sequences: A224281 A224282 A224283 * A224285 A224286 A224287

Keyword

nonn

Author

R. H. Hardin Apr 02 2013

Status

approved