A154036 Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 5 X 5 X 5 subtriangle summing to 3.

680, 2194, 3418, 3544, 3331, 2988, 2519, 1173, 1157, 1155, 1155, 1539, 1155, 1155, 1155, 1155, 1539, 1155, 1155, 1155, 1155, 1539, 1155, 1155, 1155, 1155, 1539, 1155, 1155, 1155, 1155, 1539, 1155, 1155, 1155, 1155, 1539, 1155, 1155, 1155, 1155, 1539

Offset

5,1

Comments

Pattern 1155 1155 1539 1155 1155 starts at n=14 and continues through at least n=53.

Links

Table of n, a(n) for n=5..46.

Example

Maximal zeros solution for n=14
...............0
..............0.0
.............0.0.0
............0.0.1.0
...........0.1.0.0.1
..........1.0.0.0.0.0
.........0.0.0.0.1.0.0
........0.0.0.1.0.0.0.0
.......0.0.1.0.0.0.0.1.0
......0.1.0.0.0.0.1.0.0.1
.....1.0.0.0.0.1.0.0.0.0.0
....0.0.0.0.1.0.0.0.0.1.0.0
...0.0.0.1.0.0.0.0.1.0.0.0.0
..0.0.0.0.1.0.0.0.0.1.0.0.0.0

Crossrefs

Sequence in context: A253695 A253702 A235013 * A185765 A206015 A202908

Adjacent sequences: A154033 A154034 A154035 * A154037 A154038 A154039

Keyword

nonn

Author

R. H. Hardin Jan 04 2009

Status

approved