A086183 - OEIS

%I #9 Apr 11 2021 01:29:03

%S 3,1,4,1,5,9,9,9,9,9,9,26,26,26,26,79,79,79,79,84,97,97,97,97,97,97,

%T 97,97,97,97,97,97,592,592,592,592,592,592,592,592,592,592,592,592,

%U 592,592,592,592,592,592,592,592,592,592,592,592,592,592,592,592,592

%N In decimal expansion of Pi: greatest number contained as a string in the first n positions, which is also contained in the next n positions.

%C 1 <= A086184(n) <= n <= A086185(n) <= 2*n.

%C A000796(A086184(n)+j) = A000796(A086185(n)+j), 0 <= j < A055642(a(n)).

%C For record values see A086186, A086187.

%H Dave Andersen, <a href="http://www.angio.net/pi/piquery">The Pi-Search Page</a>.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Pi.html">Pi</a>.

%e n=13: A086184(13)=7, A086185(13)=22, a(13)=26, A055642(26)=2:

%e A000796(7)=A000796(22)=2 and A000796(8)=A000796(23)=6;

%e |-----26----|--------26--|8327950288419716...

%e 314159265358979323846264338327950288419716....

%Y Cf. A000796, A055642, A086184, A086185, A086186, A086187.

%K nonn,base

%O 1,1

%A _Reinhard Zumkeller_, Jul 11 2003