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A118659 Minimum number of unit faces required to construct n unit cubes. 0
6, 11, 16, 20, 25, 29, 33, 36, 41, 45, 49, 52, 57, 61, 65, 68, 72, 75, 80, 84, 88, 91, 95, 98, 102, 105, 108, 113, 117, 121, 124, 128, 131, 135, 138, 141, 146, 150, 154, 157, 161, 164, 168, 171, 174, 178, 181, 184, 189, 193, 197, 200, 204, 207, 211, 217, 221, 224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..58.

EXAMPLE

a(2)=11 because 6 unit faces are required to construct each cube but 1 face is shared. I.e., a(2)=6+5=11.

CROSSREFS

Cf. A117227.

Sequence in context: A315447 A315448 A315449 * A315450 A315451 A072353

Adjacent sequences:  A118656 A118657 A118658 * A118660 A118661 A118662

KEYWORD

easy,nonn

AUTHOR

Ron R. King, May 18 2006

STATUS

approved

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Last modified August 9 18:32 EDT 2020. Contains 336326 sequences. (Running on oeis4.)