A154033 Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 2 X 2 X 2 subtriangle summing to 3.

10, 23, 31, 35, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27, 29, 27

Offset

2,1

Comments

Pattern 27 29 starts at n=6 and continues through at least n=60.

Links

Table of n, a(n) for n=2..60.

Example

Maximal zeros solution for n=6
.......0
......0.3
.....3.0.0
....0.0.3.0
...0.3.0.0.3
..3.0.0.3.0.0

Crossrefs

Sequence in context: A054095 A125618 A341261 * A275238 A140674 A072245

Adjacent sequences: A154030 A154031 A154032 * A154034 A154035 A154036

Keyword

nonn

Author

R. H. Hardin Jan 04 2009

Status

approved