%I A090540
%S A090540 3,131,11311,771131177,33337711311773333,77777733337711311773333777777,
%T A090540 3777777333377113117733337777773,33377777733337711311773333777777333,
%U A090540 333333337777773333771131177333377777733333333,9933333333777777333377113117733337777773333333399,
               33333993333333377777733337711311773333777777333333339933333
%N A090540 Beginning with 3, least prime obtained by sandwiching the previous term 
               between strings of identical digits.
%C A090540 Questions: (1) Is this sequence infinite? (2) If so, are the digits equally 
               distributed? - Stefan Steinerberger (hansibal(AT)hotmail.com), Nov 
               08 2005
%Y A090540 Sequence in context: A075597 A082563 A083999 this_sequence A048796 A152435 
               A157086
%Y A090540 Adjacent sequences: A090537 A090538 A090539 this_sequence A090541 A090542 
               A090543
%K A090540 base,nonn
%O A090540 1,1
%A A090540 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Dec 09 2003
%E A090540 a(6)-a(8) from Jim Nastos (nastos(AT)gmail.com), Jan 30 2004
%E A090540 a(9)-a(11) from Stefan Steinerberger (hansibal(AT)hotmail.com), Nov 08 
               2005