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A122256 Number of numbers <= n with 3-smooth Euler's totient (A000010). 1
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 20, 20, 21, 21, 22, 23, 24, 24, 25, 25, 26, 26, 27, 28, 29, 30, 31, 32, 33, 33, 34, 34, 34, 35, 35, 35, 36, 36, 36, 37, 38, 38, 39, 39, 40, 41, 41, 41, 42, 42, 42, 43, 44, 45, 45, 45, 46, 46, 47, 47, 48 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Partial sums of A122255.

LINKS

Table of n, a(n) for n=1..72.

CROSSREFS

Cf. A071521.

Sequence in context: A100470 A071604 A061069 * A122262 A172268 A017895

Adjacent sequences:  A122253 A122254 A122255 * A122257 A122258 A122259

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Aug 29 2006

STATUS

approved

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Last modified July 17 16:38 EDT 2019. Contains 325107 sequences. (Running on oeis4.)