This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A084430 #11 Aug 27 2025 18:02:32
%S A084430 101,113,181,1277,2647,11251,12161,23431,15121,17291,410009,213319,
%T A084430 117281,421973,127447,233759,240967,249131,158329,168599,180001,
%U A084430 192611,1106489,1121671,2138249,2156251,1175767,1196837,2219527,2243893,1270001,3297911,2327681
%N A084430 Smallest prime with "n^3" as central digit(s).
%o A084430 (PARI) a(n) = {n = n^3; for (i = 1, 9, forstep (j=1, 9, 2, v = j + 10*n + i*10^(1+length(Str(n))); if (isprime(v), return (v)); ); ); } \\ _Michel Marcus_, Oct 05 2013
%Y A084430 Cf. A038370, A084413, A069691.
%K A084430 easy,nonn,base,changed
%O A084430 0,1
%A A084430 _Zak Seidov_, Jun 27 2003
%E A084430 More terms from _Michel Marcus_, Oct 05 2013