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A146072 First re-appearance of first digit in decimal expansion of sqrt(prime(n)). 1

%I

%S 3,28,2,32,2,13,18,9,18,4,2,6,17,17,5,18,8,9,3,16,20,2,10,5,12,11,3,

%T 50,13,6,2,2,2,2,10,20,12,6,25,3,9,16,11,29,13,3,38,6,7,3,60,19,6,10,

%U 5,4,5,12,7,10,11,3,5,6,5,10,3,16,10,5,48,11,3,4,14,21,13,12,4,3,16,6,11,8,5

%N First re-appearance of first digit in decimal expansion of sqrt(prime(n)).

%H Zak Seidov, <a href="/A146072/b146072.txt">Table of n, a(n) for n=1..1000</a>

%e In the first 1000 terms, the largest is a(128): sqrt(prime(12)) = sqrt(719) = 26.8141753555838446187535034388744970639536100399145031439633780437859848191065407572.

%t Table[rd=RealDigits[N[Sqrt@Prime[n],100]][[1]];Flatten[Position[rd,rd[[1]]]][[2]],{n,1000}]

%Y A065593 and A112788 First re-appearance of first n digits in decimal expansion of Pi and e.

%K nonn,base

%O 1,1

%A _Zak Seidov_, Oct 26 2008

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Last modified January 28 18:00 EST 2023. Contains 359895 sequences. (Running on oeis4.)