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A050688 Numbers n such that A050677(n) is nonsquarefree. 2
8, 9, 15, 17, 18, 26, 27, 35, 36, 44, 45, 53, 54, 56, 62, 63 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..16.

M. Fleuren, Factors and primes of Smarandache sequences.

M. Fleuren, Smarandache Factors and Reverse factors

P. De Geest, Reversed Smarandache Concatenated Numbers, Prime factors from n down to 1

C. Rivera, Primes by Listing

EXAMPLE

a(2)=9 because Rsm9 = 987654321 = {3^2}.{17^2}.379721.

CROSSREFS

Cf. A013929, A000422, A050677, A048342, A050687, A050675.

Sequence in context: A101765 A306490 A256351 * A134334 A292188 A301659

Adjacent sequences:  A050685 A050686 A050687 * A050689 A050690 A050691

KEYWORD

nonn,base,hard

AUTHOR

Patrick De Geest, Aug 15 1999.

EXTENSIONS

Definition corrected by Charles R Greathouse IV, Sep 20 2012

STATUS

approved

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Last modified May 19 13:11 EDT 2019. Contains 323393 sequences. (Running on oeis4.)