A214902 Number of nXnXn triangular 0..4 arrays with every horizontal row nondecreasing and having the same average value

5, 9, 29, 182, 1802, 29162, 657722, 21063242, 892354322, 48771558002, 3355941877202, 288300261981602, 29970020819138402, 3775596638574103202, 566303743347081854402, 100233490058027413401602

Offset

1,1

Comments

Column 4 of A214906

Links

R. H. Hardin, Table of n, a(n) for n = 1..120

Example

Some solutions for n=4
.....1........2........3........2........1........3........2........2
....1.1......0.4......2.4......2.2......0.2......3.3......1.3......0.4
...0.1.2....0.2.4....3.3.3....1.1.4....0.0.3....2.3.4....1.1.4....0.2.4
..0.0.0.4..0.2.3.3..0.4.4.4..1.1.2.4..1.1.1.1..1.3.4.4..0.1.3.4..1.2.2.3

Crossrefs

Sequence in context: A303988 A242329 A343420 * A049602 A350280 A119031

Adjacent sequences: A214899 A214900 A214901 * A214903 A214904 A214905

Keyword

nonn

Author

R. H. Hardin Jul 29 2012

Status

approved