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A154079
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Number of planar triangular n X n X n nonnegative integer grids symmetric both under 120 degree rotation and reflection with every similarly oriented 4 X 4 X 4 subtriangle summing to 10.
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0
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6, 23, 8, 23, 7, 21, 5, 14, 5, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4, 10, 4, 13, 4
(list; graph; refs; listen; history; internal format)
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OFFSET
| 4,1
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COMMENTS
| Pattern 10 4 13 4 starts at n=13 and continues through at least n=60.
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EXAMPLE
| Maximal zeros solution for n=13
..............4
.............0.0
............0.2.0
...........0.2.2.0
..........4.0.0.0.4
.........0.0.2.2.0.0
........0.2.0.2.0.2.0
.......0.2.2.0.0.2.2.0
......4.0.0.0.4.0.0.0.4
.....0.0.2.2.0.0.2.2.0.0
....0.2.0.2.0.2.0.2.0.2.0
...0.2.2.0.0.2.2.0.0.2.2.0
..4.0.0.0.4.0.0.0.4.0.0.0.4
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CROSSREFS
| Sequence in context: A121796 A051224 A062818 * A160633 A012327 A012523
Adjacent sequences: A154076 A154077 A154078 * A154080 A154081 A154082
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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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