%I A157215
%S A157215 1,0,9,2,8,9,3,2,1,8,8,1,3,4,5,2,4,7,5,5,9,9,1,5,5,6,3,7,8,9,5,1,5,0,9,
%T A157215 6,0,7,1,5,1,6,4,0,6,2,3,1,1,5,2,5,9,6,3,4,1,1,6,6,0,1,3,1,0,0,4,6,3,3,
%U A157215 7,6,0,7,6,8,9,4,6,4,8,0,5,7,4,8,0,6,2,3,2,8,3,6,1,7,9,2,1,3,6,3,2,4,9
%N A157215 Decimal expansion of 18-5*sqrt(2).
%C A157215 lim_{n -> infinity} b(n)/b(n-1) = (18+5*sqrt(2))/(18-5*sqrt(2)) for n 
               mod 3 = {1, 2}, b = A129544.
%C A157215 lim_{n -> infinity} b(n)/b(n-1) = (18+5*sqrt(2))/(18-5*sqrt(2)) for n 
               mod 3 = {0, 2}, b = A157213.
%e A157215 18-5*sqrt(2) = 10.92893218813452475599...
%Y A157215 Cf. A129544, A157213, A157214 (decimal expansion of 18+5*sqrt(2)), A157216 
               (decimal expansion of (18-5*sqrt(2))/(18+5*sqrt(2))).
%Y A157215 Sequence in context: A086238 A144664 A073007 this_sequence A021919 A078127 
               A146492
%Y A157215 Adjacent sequences: A157212 A157213 A157214 this_sequence A157216 A157217 
               A157218
%K A157215 cons,nonn
%O A157215 2,3
%A A157215 Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Feb 25 2009