A154053 Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 5 X 5 X 5 subtriangle summing to 5.

11628, 79753, 235290, 356994, 326326, 194107, 148269, 45493, 15037, 5541, 2529, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511, 2511

Offset

5,1

Comments

Value 2511 starts at n=16 and continues through at least n=49.

Links

Table of n, a(n) for n=5..43.

Example

Maximal zeros solution for n=16
.................0
................0.0
...............0.0.2
..............0.2.0.0
.............1.0.0.0.0
............1.0.0.0.1.0
...........0.0.0.1.0.1.0
..........0.0.0.1.1.0.0.0
.........0.0.2.0.0.0.0.0.2
........0.2.0.0.0.0.0.2.0.0
.......1.0.0.0.0.1.1.0.0.0.0
......1.0.0.0.1.0.1.0.0.0.1.0
.....0.0.0.1.0.1.0.0.0.1.0.1.0
....0.0.0.1.1.0.0.0.0.1.1.0.0.0
...0.0.2.0.0.0.0.0.2.0.0.0.0.0.2
..0.2.0.0.0.0.0.2.0.0.0.0.0.2.0.0

Crossrefs

Sequence in context: A049051 A250242 A231321 * A151600 A214804 A352330

Adjacent sequences: A154050 A154051 A154052 * A154054 A154055 A154056

Keyword

nonn

Author

R. H. Hardin Jan 04 2009

Status

approved