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A072778 Number of powers of square-free numbers <= n. +0
2
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 11, 12, 13, 14, 15, 16, 16, 17, 17, 18, 19, 20, 20, 21, 22, 23, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 34, 35, 36, 37, 37, 37, 38, 39, 39, 40, 40, 41, 41, 42, 42, 43, 43, 44, 45, 46, 46, 47, 48, 48, 49, 50, 51, 52, 52, 53, 54, 55, 55 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Cf. A072774, A013928.

Sequence in context: A062759 A121758 A121759 this_sequence A034326 A053833 A087999

Adjacent sequences: A072775 A072776 A072777 this_sequence A072779 A072780 A072781

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 10 2002

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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