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%I #10 Nov 15 2021 02:48:05
%S 61,1831,18311,366221,21973261,5273582641,52735826411,1054716528221,
%T 158207479233151,11074523546320571,1661178531948085651,
%U 249176779792212847651,92195408523118753630871
%N Beginning with 61, primes of the form: least multiple of the previous term followed by a 1. Beginning with 61, a(n) is the least prime of the form k*a(n-1)*10 +1.
%H Harvey P. Dale, <a href="/A113054/b113054.txt">Table of n, a(n) for n = 1..300</a>
%t lmpt[n_]:=Module[{k=1},While[!PrimeQ[k*n*10+1],k++];k*n*10+1]; NestList[ lmpt,61,20] (* _Harvey P. Dale_, Aug 27 2016 *)
%K base,nonn
%O 1,1
%A _Amarnath Murthy_, Jan 03 2006
%E More terms from _Joshua Zucker_, Jan 11 2006