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%I #22 Oct 29 2019 21:10:53
%S 10,138,2121,3497,88009,176452,25198141,50366473,1660042752
%N First re-appearance of first n digits in decimal expansion of Pi.
%C a(10) > 6*10^9. - _Robert G. Wilson v_, Oct 25 2019
%e a(2) = 138, as A000796(1..2) = A000796(138..139) = 31.
%Y Cf. A000796.
%K base,more,nonn
%O 1,1
%A _Reinhard Zumkeller_, Nov 28 2001
%E More terms from Emery Cox IV (kecox47(AT)earthlink.net), Jun 14 2002
%E a(9) from _Robert G. Wilson v_, Oct 24 2019
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