A267930 Number of nX3 0..3 arrays with every repeated value in every row and column greater than the previous repeated value.

60, 3600, 178068, 8459154, 376812420, 16109362560, 663451196118, 26507885328672, 1031599522028772, 39244717326244854, 1463429227285701348, 53613261264275522982, 1933276790525967340428, 68725772580648925008792

Offset

1,1

Comments

Column 3 of A267933.

Links

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

R. H. Hardin, Empirical recurrence of order 81

Formula

Empirical recurrence of order 81 (see link above)

Example

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

Crossrefs

Cf. A267933.

Sequence in context: A223657 A264369 A053401 * A267977 A159991 A042741

Adjacent sequences: A267927 A267928 A267929 * A267931 A267932 A267933

Keyword

nonn

Author

R. H. Hardin, Jan 22 2016

Status

approved