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%I #4 Mar 30 2012 17:26:17
%S 0,0,1,1,2,1,1,2,2,2,0,1,2,2,2,2,2,3,3,2,1,2,3,2,3,1,1,1,2,3,1,2,3,4,
%T 4,3,3,3,4,4,2,2,3,3,4,3,3,4,3,3,1,3,3,4,4,3,3,4,4,4,1,3,4,2,2,3,3,4,
%U 3,3,2,3,4,3,2,2,1,4,3,4,2,3,3,2,4,3,3,3,4,3,2,3,4,3,4,2,2,2,3,3,0,1,2,2,2
%N Number of decimal digits ( counted with multiplicity ) in n^2 but not in n.
%C Cf. A076493 Number of common and distinct decimal digits of n and n^2, A109071 Number of common decimal digits ( counted with multiplicity ) of n and n^2, A109072 Number of decimal digits ( counted with multiplicity ) in n but not in n^2.
%e a(35)=4 because 34^2=1156 and there are 4 digits (counted with multiplicity) which are in 34^2 but not in 34.
%t UnsortedComplement[x_List, y__List]:=Replace[x, Dispatch[(#\[RuleDelayed]Sequence[])&/@Union[y]], 1]; Table[Length[UnsortedComplement[IntegerDigits[n], IntegerDigits[n^2]]], {n, 0, 200}]
%Y Cf. A076493, A109071, A109072.
%K base,easy,nonn
%O 0,5
%A _Zak Seidov_, Jun 20 2005
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