A214544 Number of 6X6X6 triangular 0..n arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and every horizontal row having the same average value

2, 17213, 141470, 2280331, 15986168, 98726075, 481650122, 2044254981, 7567047596, 25388753287, 77613247698, 220319905339, 584578487982

Offset

1,1

Comments

Row 6 of A214540

Links

Table of n, a(n) for n=1..13.

Example

Some solutions for n=2
.......1............1............1............1............1............1
......0.2..........1.1..........1.1..........1.1..........0.2..........2.0
.....0.2.1........1.1.1........2.0.1........2.0.1........1.0.2........1.2.0
....1.0.2.1......1.0.2.1......2.0.1.1......0.2.0.2......1.0.1.2......1.2.1.0
...1.1.0.2.1....1.0.1.2.1....1.2.0.2.0....0.2.0.1.2....1.1.0.1.2....1.2.1.0.1
..2.1.0.1.2.0..1.0.0.2.2.1..1.2.0.1.2.0..2.0.2.0.2.0..0.2.0.1.2.1..2.1.2.0.1.0

Crossrefs

Sequence in context: A264944 A242855 A367123 * A318716 A260252 A324437

Adjacent sequences: A214541 A214542 A214543 * A214545 A214546 A214547

Keyword

nonn

Author

R. H. Hardin Jul 20 2012

Status

approved