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Beginning with 2, primes of the form: least multiple of the previous term followed by a 1. Beginning with 2, a(n) is the least prime of the form k*a(n-1)*10 + 1.
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%I #11 Nov 14 2021 17:43:38

%S 2,41,821,16421,328421,59115781,13005471821,260109436421,

%T 36415321098941,2184919265936461,196642733934281491,

%U 31462837429485038561,5348682363012456555371,4011511772259342416528251,842417472174461907470932711,33696698886978476298837308441

%N Beginning with 2, primes of the form: least multiple of the previous term followed by a 1. Beginning with 2, a(n) is the least prime of the form k*a(n-1)*10 + 1.

%H Michael De Vlieger, <a href="/A112767/b112767.txt">Table of n, a(n) for n = 1..300</a>

%t lmpt[n_]:=Module[{k=2},While[!PrimeQ[10*k*n+1],k++];10*k*n+1]; NestList[ lmpt,2,20] (* _Harvey P. Dale_, Jan 21 2016 *)

%Y Cf. A112782, A112783, A112784.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Jan 02 2006

%E More terms from _Joshua Zucker_, Jan 11 2006

%E More terms from _Harvey P. Dale_, Jan 21 2016