A154047 - OEIS

A154047

Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 5.

42, 191, 108, 203, 80, 166, 44, 95, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35, 82, 35, 88, 35

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OFFSET

4,1

COMMENTS

Pattern 35 82 35 88 starts at n=12 and continues through at least n=60.

LINKS

Table of n, a(n) for n=4..60.

EXAMPLE

Maximal zeros solution for n=12

.............3

............0.0

...........0.2.0

..........0.0.0.0

.........2.0.1.0.2

........0.0.1.1.0.0

.......0.2.0.0.0.2.0

......0.0.0.1.1.0.0.0

.....2.0.1.0.1.0.1.0.2

....0.0.1.1.0.0.1.1.0.0

...0.2.0.0.0.2.0.0.0.2.0

..0.0.0.1.1.0.0.1.1.0.0.0

CROSSREFS

Sequence in context: A115130 A116871 A158484 * A090198 A299056 A299817

Adjacent sequences: A154044 A154045 A154046 * A154048 A154049 A154050

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved