%I #6 May 10 2013 12:44:53
%S 0,1,2,3,6,7,12,15,32,43,48,61,136,159,240,527,572,1009,1022,1085,
%T 1910,2365,3782,6377,13384,17929,18736,25521,57840,155021,258058,
%U 266247,267278,278751,315806,328269
%N Smallest m such that A064672(m) = n.
%C A064672(a(n)) = n and A064672(m) < n for m < a(n).
%o (Haskell)
%o import Data.List (elemIndex)
%o import Data.Maybe (fromJust)
%o a064689 = fromJust . (`elemIndex` a064672_list)
%o -- _Reinhard Zumkeller_, Apr 27 2012
%Y Cf. A064672.
%K nonn,easy
%O 0,3
%A Jonathan Ayres (jonathan.ayres(AT)btinternet.com), Oct 09 2001
%E More terms from _Vladeta Jovovic_, Oct 13 2001
%E Initial term added and offset adjusted by _Reinhard Zumkeller_, Apr 27 2012