0,1

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

C. Rivera, Primes by Listing

M. Fleuren, Smarandache Factors and Reverse factors

Cf. A046460.

Sequence in context: A143416 A164698 A020880 this_sequence A132184 A143322 A034897

Adjacent sequences: A046464 A046465 A046466 this_sequence A046468 A046469 A046470

nonn,hard,base

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