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%I A234356 #10 Dec 10 2019 03:28:16
%S A234356 5,4,9,7,1,1,7,7,9,4,4,8,6,2,1,5,5,3,8,8,4,7,1,1,7,7,9,4,4,8,6,2,1,5,
%T A234356 5,3,8,8,4,7,1,1,7,7,9,4,4,8,6,2,1,5,5,3,8,8,4,7,1,1,7,7,9,4,4,8,6,2,
%U A234356 1,5,5,3,8,8,4,7,1,1,7,7,9,4,4,8,6,2,1,5,5,3,8,8,4,7,1,1,7,7,9,4
%N A234356 Decimal expansion of B(18) = 43867/798, the 18th Bernoulli number.
%C A234356 B(6), B(16) and B(18) are the first three Bernoulli numbers whose index is equal to their decimal expansion periodic length, B(16) and B(18) being the smallest such pair of consecutive even-indexed Bernoulli numbers.
%e A234356 54.9711779448621553884711779448621553884...
%t A234356 RealDigits[BernoulliB[18], 10, 100] // First
%Y A234356 Cf. A021046 (B(6)), A234355 (B(16)).
%K A234356 nonn,cons
%O A234356 2,1
%A A234356 _Jean-François Alcover_ and _Paul Curtz_, Dec 24 2013

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