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A154046 Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 4 X 4 X 4 subtriangle summing to 5. 0
4, 14, 23, 19, 11, 38, 9, 12, 11, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

COMMENTS

Pattern 4 7 10 7 starts at n=13 and continues through at least n=60.

LINKS

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

EXAMPLE

Maximal zeros solution for n=13

..............2

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

............0.1.0

...........0.1.1.0

..........2.0.0.0.2

.........0.0.1.1.0.0

........0.1.0.1.0.1.0

.......0.1.1.0.0.1.1.0

......2.0.0.0.2.0.0.0.2

.....0.0.1.1.0.0.1.1.0.0

....0.1.0.1.0.1.0.1.0.1.0

...0.1.1.0.0.1.1.0.0.1.1.0

..2.0.0.0.2.0.0.0.2.0.0.0.2

CROSSREFS

Sequence in context: A199987 A201016 A317734 * A000054 A063616 A213399

Adjacent sequences:  A154043 A154044 A154045 * A154047 A154048 A154049

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved

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Last modified December 7 17:41 EST 2019. Contains 329847 sequences. (Running on oeis4.)