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A154046
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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.
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0
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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; internal format)
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OFFSET
| 4,1
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COMMENTS
| Pattern 4 7 10 7 starts at n=13 and continues through at least n=60.
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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
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CROSSREFS
| Sequence in context: A044437 A199987 A201016 * A000054 A063616 A031254
Adjacent sequences: A154043 A154044 A154045 * A154047 A154048 A154049
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KEYWORD
| nonn
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AUTHOR
| R. H. Hardin (rhhardin(AT)att.net) Jan 04 2009
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