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 A175077 Final number reached by iterating r -> A049711(r) starting at r = n. 3
 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See A175071 for starting n that reach 1, and A175072 for starting n that reach 2. LINKS FORMULA a(A175071(k)) = 1; a(A175072(k)) = 2, any k [R. J. Mathar, Feb 19 2010] EXAMPLE Iteration procedure for n = 6: 6 mod 5 = 1 = a(6). Iteration procedure for n = 7: 7 mod 5 = 2 = a(7). MAPLE A151799 := proc(n) prevprime(n) ; end proc: A049711 := proc(n) if n <=2 then n; else n-A151799(n) ; end if; end proc: A175077 := proc(n) local r ; r := n ; while r > 2 do r := A049711(r) ; end do: r ; end proc: seq(A175077(n), n=1..100) ; # R. J. Mathar, Feb 19 2010 CROSSREFS Cf. A151799. Sequence in context: A279044 A134265 A182858 * A001030 A246140 A071709 Adjacent sequences:  A175074 A175075 A175076 * A175078 A175079 A175080 KEYWORD nonn AUTHOR Jaroslav Krizek, Jan 23 2010 EXTENSIONS More terms from R. J. Mathar, Feb 19 2010 STATUS approved

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