A214911 Number of 7X7X7 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value

2, 578, 13442, 657722, 8943218, 130431428, 1207302502, 10272615125, 64849263302, 384014075750, 1885027008818, 8723067515222, 34924262211422, 133490468673758, 458639082931598, 1515242313469477, 4594326578653430, 13491494779735190

Offset

1,1

Comments

Row 7 of A214906

Links

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

Example

Some solutions for n=4
........2..............2..............2..............2..............2
.......0.4............0.4............0.4............0.4............0.4
......1.1.4..........1.1.4..........0.2.4..........1.1.4..........1.1.4
.....2.2.2.2........0.2.3.3........2.2.2.2........0.2.3.3........1.2.2.3
....0.2.2.3.3......0.2.2.3.3......1.1.2.3.3......0.0.3.3.4......0.1.3.3.3
...2.2.2.2.2.2....0.0.2.3.3.4....0.2.2.2.2.4....0.2.2.2.3.3....0.1.1.3.3.4
..0.1.2.2.3.3.3..1.1.1.1.2.4.4..0.1.1.2.2.4.4..0.0.2.2.3.3.4..0.1.1.1.3.4.4

Crossrefs

Sequence in context: A306635 A212840 A129697 * A203770 A121850 A291320

Adjacent sequences: A214908 A214909 A214910 * A214912 A214913 A214914

Keyword

nonn

Author

R. H. Hardin Jul 29 2012

Status

approved