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A072358 Number of cube-free numbers <= n which are not squarefree. 1
0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 10, 10, 10, 10, 11, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19 (list; graph; refs; listen; history; internal format)
OFFSET

1,9

COMMENTS

a(n) = A060431(n) - A013928(n+1).

CROSSREFS

Cf. A067259, A004709, A005117.

Sequence in context: A004257 A156684 A070564 * A074795 A069577 A130239

Adjacent sequences:  A072355 A072356 A072357 * A072359 A072360 A072361

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 18 2002

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Last modified February 16 16:00 EST 2012. Contains 205938 sequences.