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Search: id:A053574
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A053574 Exponent of 2 in EulerPhi[n]. +0
2
0, 0, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 3, 3, 4, 1, 1, 3, 2, 1, 1, 3, 2, 2, 1, 2, 2, 3, 1, 4, 2, 4, 3, 2, 2, 1, 3, 4, 3, 2, 1, 2, 3, 1, 1, 4, 1, 2, 5, 3, 2, 1, 3, 3, 2, 2, 1, 4, 2, 1, 2, 5, 4, 2, 1, 5, 2, 3, 1, 3, 3, 2, 3, 2, 2, 3, 1, 5, 1, 3, 1, 3, 6, 1, 3, 3, 3, 3, 3, 2, 2, 1, 3, 5, 5, 1, 2, 3, 2, 5, 1, 4, 4 (list; graph; listen)
OFFSET

1,5

EXAMPLE

n=513=27*19 Phi[513]=4*81 so power of 2 is 2, thus a(513)=2

CROSSREFS

Cf. A000010.

Sequence in context: A103684 A105103 A086669 this_sequence A065203 A029396 A084746

Adjacent sequences: A053571 A053572 A053573 this_sequence A053575 A053576 A053577

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jan 18 2000

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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