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A154048
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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 5.
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0
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2, 6, 3, 5, 1, 6, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1, 2, 1, 4, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 4,1
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COMMENTS
| Pattern 1 4 1 2 starts at n=10 and continues through at least n=60.
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EXAMPLE
| Maximal zeros solution for n=10
...........1
..........1.1
.........0.0.0
........0.1.1.0
.......1.0.1.0.1
......1.1.0.0.1.1
.....0.0.0.2.0.0.0
....0.1.1.0.0.1.1.0
...1.0.1.0.1.0.1.0.1
..1.1.0.0.1.1.0.0.1.1
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CROSSREFS
| Sequence in context: A130108 A201746 A026203 * A084355 A093650 A064433
Adjacent sequences: A154045 A154046 A154047 * A154049 A154050 A154051
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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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