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a(n+1) is smallest palindromic prime containing exactly 3 more digits on each end than the previous term, with a(n) as a central substring.
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%I #18 Oct 22 2023 21:58:04

%S 2,1022201,1051022201501,1241051022201501421,

%T 1071241051022201501421701,1051071241051022201501421701501,

%U 1091051071241051022201501421701501901,1351091051071241051022201501421701501901531

%N a(n+1) is smallest palindromic prime containing exactly 3 more digits on each end than the previous term, with a(n) as a central substring.

%H Giovanni Resta, <a href="/A052205/b052205.txt">Table of n, a(n) for n = 1..26</a> (full sequence)

%Y Cf. A047076, A053600, A034276, A256957, A052091, A052092.

%K base,nonn,fini,full

%O 1,1

%A _G. L. Honaker, Jr._, Jan 28 2000

%E Shown to be finite by _Felice Russo_