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A237709 Number of occurrences of n-th prime power in A188666. 2
1, 2, 2, 2, 2, 4, 2, 2, 4, 4, 6, 2, 4, 8, 4, 4, 4, 4, 2, 10, 8, 4, 8, 4, 8, 12, 4, 6, 6, 8, 4, 12, 4, 4, 12, 16, 8, 4, 8, 4, 8, 16, 8, 4, 2, 6, 12, 4, 20, 4, 12, 12, 8, 4, 8, 12, 4, 20, 4, 8, 4, 24, 24, 8, 4, 8, 12, 4, 4, 16, 10, 2, 12, 12, 4, 12, 8, 4, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

EXAMPLE

A188666: 1 2 2 3 3 4 4 5 5 7 7 7 7 8 8 9 9 11 11 11 11 13 13 13 13 16 ...

A237709: 1   2   2   2   2       4   2   2           4           4

PROG

(Haskell)

import Data.List (group)

a237709 n = a237709_list !! (n-1)

a237709_list = map length $ group a188666_list

CROSSREFS

Cf. A000961, A138929.

Sequence in context: A069733 A187467 A081755 * A250200 A097859 A028326

Adjacent sequences:  A237706 A237707 A237708 * A237710 A237711 A237712

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Feb 12 2014

STATUS

approved

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Last modified November 20 20:28 EST 2019. Contains 329347 sequences. (Running on oeis4.)