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A050781 (n + sopf_n = m) and (m - sopf_m = n). Sequence gives values of m. +0
3
55, 72, 84, 119, 143, 256, 2106, 2211, 2279, 3024, 3150, 3551, 4284, 6360, 6500, 9350, 10200, 10285, 10919, 13560, 14279, 14351, 15606, 16463, 17063, 23595, 25011, 27208, 28208, 28600, 31460, 33096, 42180, 44330, 52320, 53053, 53824 (list; graph; listen)
OFFSET

0,1

COMMENT

sopf_m = sum of the prime factors of m (with multiplicity).

EXAMPLE

E.g. 585585 + (3+3+5+7+11+13+13) = 585640 - (2+2+2+5+11+11+11+11) = 585585.

CROSSREFS

Cf. A050780, A050703-A050710.

Sequence in context: A068898 A068899 A053719 this_sequence A060260 A152080 A119224

Adjacent sequences: A050778 A050779 A050780 this_sequence A050782 A050783 A050784

KEYWORD

nonn,nice

AUTHOR

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

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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