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 A133976 #11 Mar 23 2021 15:41:25
%S A133976 379811,1173463,2314723,2315641,2337607,3182561,3371237,3372371,
%T A133976 3376991,3379997,3383777,3411901,3539857,3710627,3779873,3791453,
%U A133976 3792179,3795581,3798737,3831523,3898513,7338269,7482569,7539743
%N A133976 Home primes whose homeliness is 11.
%C A133976 Number of terms < 10^n: 0, 0, 0, 0, 0, 1, 24, ... .
%t A133976 lst = {}; f[n_] := FromDigits@ Flatten[ IntegerDigits@ Table[ #[[1]], {#[[2]]}] & /@ FactorInteger@n, 2]; h[n_] := NestWhileList[f@# &, n, !PrimeQ@# &, 1, 28]; Do[p = h[n][[ -1]]; If[ PrimeQ@p && p < 10^7 && p != n, Print[{n, p}]; AppendTo[lst, p]], {n, 2, 1000}];
%t A133976 d = 11 - 2; lsu = {}; Do[ If[ lst[[n]] == lst[[n + d]] && lst[[n - 1]] != lst[[n]] && lst[[n]] != lst[[n + d + 1]], AppendTo[lsu, lst[[n]]]], {n, 188004 - d - 1}]; Take[Union@ lsu, 31]
%Y A133976 Cf. A037274, A118756, A133975, A133956, A133957, A133958, A133960, A133962, A133964, A133966, A133968, A133970, A133972, A133974, A133978.
%K A133976 nonn,base
%O A133976 1,1
%A A133976 _Robert G. Wilson v_, Sep 30 2007