%N Index of first occurrence of n in A093890, or 0 if no such number exists.
%C Conjecture: there are infinitely many zeros in this sequence.
%F A093890[a(n)]=n. - _R. J. Mathar_, Feb 05 2007
%Y Cf. A093890, A093891.
%A _Amarnath Murthy_, Apr 23 2004
%E Corrected by _R. J. Mathar_, Feb 05 2007
%E More terms from _David Wasserman_, Apr 23 2007
%E Obsolete comment removed by _R. J. Mathar_, Jul 22 2009