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A064674 Number of primes q such that phiter(q)=n where phiter(n)=A064415(n). 0
0, 2, 2, 3, 6, 12, 23, 46, 94, 198, 424, 854, 1859, 3884, 8362, 17837, 38977 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

For n>1, a(n) is the number of primes in class n of the Phi iteration. See A003434 and A058812. [From T. D. Noe, Nov 05 2008]

LINKS

Table of n, a(n) for n=0..16.

CROSSREFS

Cf. A000010, A003434, A064415, A064416.

Sequence in context: A049853 A162599 A064319 * A095902 A103687 A166678

Adjacent sequences:  A064671 A064672 A064673 * A064675 A064676 A064677

KEYWORD

nonn

AUTHOR

Christian WEINSBERG (cweinsbe(AT)fr.packardbell.org), Oct 10 2001

EXTENSIONS

Extended by T. D. Noe, Nov 05 2008

STATUS

approved

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Last modified March 24 12:14 EDT 2019. Contains 321448 sequences. (Running on oeis4.)