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A046460 Number of prime factors of concatenation of numbers from 1 up to n, with multiplicity. 11
1, 3, 2, 2, 3, 8, 2, 5, 4, 3, 6, 6, 3, 3, 3, 4, 5, 6, 6, 10, 8, 6, 4, 6, 5, 9, 8, 7, 4, 7, 3, 6, 6, 2, 8, 9, 4, 4, 6, 9, 5, 7, 4, 7, 10, 7, 5, 8, 6, 10, 3, 9, 8, 14, 5, 5, 6, 4, 4, 8, 3, 8, 5, 10 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

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

LINKS

P. De Geest, Normal Smarandache Concatenated Numbers, Prime factors from 1 up to n

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. A007908, A046461-A046468, A050677.

Sequence in context: A029246 A059942 A032450 * A117643 A164522 A141862

Adjacent sequences:  A046457 A046458 A046459 * A046461 A046462 A046463

KEYWORD

nonn,hard,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Aug 15 1998.

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Last modified February 14 20:38 EST 2012. Contains 205663 sequences.