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%I #14 Nov 25 2012 00:54:22
%S 170,241,256,262,280,358,408,590,592,616,646,698,700,724,728,766,784,
%T 844,897,926,930,968,970,990,1026,1036,1078,1098,1102,1210,1222,1236,
%U 1238
%N Subsequence of A217679 where iterations (giving primes through 'extended' interbase translation) reach a single digit.
%C This is a peripheral spin-off sequence--the 4th in a set--to a collection dealing with a complex of coincidences concerning interbase translation (the substitution of digits from the representation of a number in one base to another, essentially number-->polynomial-->number). The word 'extended' is in the title to distinguish between the more usual case of such translations being done from a smaller to a larger base and the opposite case where the digital substitution can only be generally done formally because of digits being greater than or equal to the second base. See cross-referenced sequences for the initiating material. The entries here answer the question of which bases take a certain prime to a prime below that base.
%Y Cf. A217673, A217679, A217680.
%K nonn,fini,base
%O 1,1
%A _James G. Merickel_, Oct 19 2012
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