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From Wikipedia, the free encyclopedia

218 (two hundred [and] eighteen) is the natural number following 217 and preceding 219.


  1. ^ Sloane, N. J. A. (ed.). "Sequence A051400 (Smallest value of x such that M(x)=n, where M() is Mertens's function)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A058763 (Integers which are neither totient nor cototient)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^
This page was last edited on 29 October 2018, at 16:01
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