A201234 Number of n X 7 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

46, 2697, 62133, 508368, 77620598, 4442977704, 112920979339, 1076710643794

Offset

1,1

Comments

Column 7 of A201235.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A201235.

Sequence in context: A333718 A234153 A123830 * A025763 A223884 A223891

Adjacent sequences: A201231 A201232 A201233 * A201235 A201236 A201237

Keyword

nonn

Author

R. H. Hardin, Nov 28 2011

Status

approved