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Search: id:A062955
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A062955 Phi(n^2)-phi(n). +0
1
0, 1, 4, 6, 16, 10, 36, 28, 48, 36, 100, 44, 144, 78, 112, 120, 256, 102, 324, 152, 240, 210, 484, 184, 480, 300, 468, 324, 784, 232, 900, 496, 640, 528, 816, 420, 1296, 666, 912, 624, 1600, 492, 1764, 860, 1056, 990, 2116, 752, 2016, 980, 1600, 1224, 2704 (list; graph; listen)
OFFSET

1,3

PROGRAM

(PARI) a(n)=if(n<1, 0, eulerphi(n^2)-eulerphi(n))

CROSSREFS

Sequence in context: A123667 A129597 A088843 this_sequence A133092 A056222 A138624

Adjacent sequences: A062952 A062953 A062954 this_sequence A062956 A062957 A062958

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 22 2001

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Last modified December 4 15:47 EST 2008. Contains 151279 sequences.


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