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%I #10 Nov 16 2014 14:36:40
%S 2,3,11,23,47,283,719,1439,2879,34549,138197,1266767,14920303
%N Smallest k such that 8^^n is not congruent to 8^^(n-1) mod k, where 8^^n denotes the power tower 8^8^...^8 (in which 8 appears n times).
%C For general remarks regarding sequences of this type, see A246491.
%o (Sage, cython) Use linked source from A246491 with this command: find_k_values(8,1,1)
%Y Cf. A027763, A056637, A246491 - A246497
%K nonn,more
%O 1,1
%A _Wayne VanWeerthuizen_, Aug 27 2014
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