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Search: id:A130724
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A130724 a(n) = LCM(3,n)/GCD(3,n) +0
1
0, 3, 6, 1, 12, 15, 2, 21, 24, 3, 30, 33, 4, 39, 42, 5, 48, 51, 6, 57, 60, 7, 66, 69, 8, 75, 78, 9, 84, 87, 10, 93, 96, 11, 102, 105, 12, 111, 114, 13, 120, 123, 14, 129, 132, 15, 138, 141, 150, 17, 156, 159, 18, 165, 168, 19, 174, 177 (list; graph; listen)
OFFSET

0,2

COMMENT

A109044/A109007

EXAMPLE

a(7)=21 because LCM(3,7)=21 and GCD(3,7)=1.

CROSSREFS

Cf. A109044, A109007.

Sequence in context: A108591 A110119 A026250 this_sequence A120229 A123534 A100960

Adjacent sequences: A130721 A130722 A130723 this_sequence A130725 A130726 A130727

KEYWORD

easy,nonn

AUTHOR

Neville Holmes (neville.holmes(AT)utas.edu.au), Jul 04 2007

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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