A237709 Number of occurrences of n-th prime power in A188666.

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

Offset: 1

Author

Reinhard Zumkeller, Feb 12 2014

Keywords

• nonn

Examples

			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
		

Links

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

Crossrefs

Cf. A000961, A138929.

Programs

Haskell

import Data.List (group)
a237709 n = a237709_list !! (n-1)
a237709_list = map length $ group a188666_list