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A050678 First occurrence of n in A050678. 2
1, 2, 5, 8, 9, 15, 17, 30, 26, 18 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

M. Fleuren, Smarandache Factors and Reverse Factors, Smarandache Notions Journal, 10 (No. 1-2-3, Spring 1999), 5-38.

LINKS

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

M. L. Perez et al., eds., Smarandache Notions Journal

C. Rivera, Primes by Listing

M. Fleuren, Factors and primes of Smarandache sequences.

M. Fleuren, Smarandache Factors and Reverse factors

CROSSREFS

Cf. A000422, A050676, A050677.

Sequence in context: A184866 A032684 A026448 * A173286 A088620 A068702

Adjacent sequences:  A050675 A050676 A050677 * A050679 A050680 A050681

KEYWORD

nonn,base,hard

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1999.

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Last modified February 16 13:12 EST 2012. Contains 205909 sequences.