A224208 Number of 6 X n 0..3 arrays with rows unimodal and antidiagonals nondecreasing.

4096, 1600000, 72105068, 1229044416, 12652618110, 96914926654, 618703866073, 3548209715979, 19271137728483, 102347986047920, 537384393939360, 2776104877172612, 13950578706978266, 67469676772365413, 311817626166418846

Offset

1,1

Comments

Row 6 of A224204.

Links

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

R. H. Hardin, Empirical polynomial of degree 36

Formula

Empirical polynomial of degree 36 (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
..0..0..2....0..0..2....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..2..2....0..2..0....2..2..2....2..2..1....0..0..1....2..2..1....2..2..1
..2..3..2....2..3..0....2..3..0....3..3..1....0..2..1....2..2..2....2..2..1
..3..2..0....3..2..2....3..0..0....3..1..1....2..2..2....3..3..3....2..2..2
..3..2..0....2..3..1....3..0..0....1..3..1....3..2..1....3..3..1....2..3..2

Crossrefs

Cf. A224204.

Sequence in context: A269206 A183816 A224285 * A017034 A017118 A269294

Adjacent sequences: A224205 A224206 A224207 * A224209 A224210 A224211

Keyword

nonn

Author

R. H. Hardin, Apr 01 2013

Status

approved