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%I #15 Oct 30 2018 10:31:02
%S 2,17,16,37,49,73,97,75,56,855,710,1081,1077,1637,1658,1652,890,1675,
%T 1228,2040,1487,2373,2691,2289,2034,2283,1786,2704,4156,3103,3522,
%U 3768,4326,3809,3552,4082,3786,3230,4465,4885,4128,4229,5337,3962,4243,3634,4572,3869,4357,5836
%N Position of n-th appearance of n in decimal expansion of Pi.
%C In decimal expansion of Pi (A000796)3,1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,2,3,8,4,6,2,6,4,3,3,8,3,
%C 2,7,9,5,0,2,8,8,4,
%C "1" is at 2nd position, hence a(1)=2,
%C "2" is at 7th and 17th positions, hence a(2)=17,
%C "3" is at 1st, 9th and 16th positions, hence a(3)=16.
%H Zak Seidov, <a href="/A196732/b196732.txt">Table of n, a(n) for n = 1..1000</a>
%t rd=RealDigits[N[Pi,2*10^7]][[1]]; Table[idn=IntegerDigits[n]; Position[Partition[rd,Length[idn],1],idn][[n,1]], {n,1000}]
%Y Cf. A000796.
%K nonn,base
%O 1,1
%A _Zak Seidov_, Oct 05 2011
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