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A072775 Squarefree kernels of powers of squarefree numbers. 4
1, 2, 3, 2, 5, 6, 7, 2, 3, 10, 11, 13, 14, 15, 2, 17, 19, 21, 22, 23, 5, 26, 3, 29, 30, 31, 2, 33, 34, 35, 6, 37, 38, 39, 41, 42, 43, 46, 47, 7, 51, 53, 55, 57, 58, 59, 61, 62, 2, 65, 66, 67, 69, 70, 71, 73, 74, 77, 78, 79, 3, 82, 83, 85, 86, 87, 89, 91, 93, 94, 95, 97, 10, 101 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) = A007947(A072774(n));

A072774(n) = a(n)^A072776(n);

A072774(n) is squarefree iff A072774(n)=a(n).

LINKS

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

PROG

(Haskell)

a072775 n = a072775_list !! (n-1)  -- a072775_list defined in A072774.

-- Reinhard Zumkeller, Apr 06 2014

CROSSREFS

Cf. A052410.

Sequence in context: A052410 A327501 A175781 * A304768 A243057 A090078

Adjacent sequences:  A072772 A072773 A072774 * A072776 A072777 A072778

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jul 10 2002

STATUS

approved

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Last modified April 17 11:45 EDT 2021. Contains 343064 sequences. (Running on oeis4.)