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A345205
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Minimum number of unit cubes needed to fully enclose n unit cubes in 3D space.
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1
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8, 26, 34, 42, 44, 52, 54, 56, 56, 64, 66, 68, 68, 76, 78, 80, 80, 82, 82, 90, 92, 94, 94, 96, 96, 98, 98, 98
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OFFSET
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0,1
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COMMENTS
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Cubes are assumed to be aligned in a 3D grid. Cubes with an exposed edge or corner are not considered enclosed.
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LINKS
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EXAMPLE
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For a(1) the solution is the number of neighbors in Moore's neighborhood in 3 dimensions (3^3-1 = 26).
For a(2) the solution is the neighbors in Moore's neighborhood in 3 dimensions plus the number of neighbors in 2 dimensions (3^2-1 = 8).
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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