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 A106100 #12 Jan 02 2019 07:23:39
%S A106100 2,211,1021,1201,2011,2111,2221,10211,12011,12101,12211,20011,20021,
%T A106100 20101,20201,21001,21011,21101,21121,21211,21221,22111,101021,101221,
%U A106100 102001,102101,102121,110221,111121,111211,112111,112121,120011,120121
%N A106100 Primes with maximal digit = 2.
%C A106100 Subsequence of A036953. Prime numbers p such that A209928(p) = 2. Complement of A221698 with respect to A221697. [_Jaroslav Krizek_, Jan 22 2013]
%H A106100 Robert Israel, <a href="/A106100/b106100.txt">Table of n, a(n) for n = 1..10000</a>
%p A106100 N:= 6: # to get all terms of up to N digits
%p A106100 M2:= {1};M1:= {1}:
%p A106100 for d from 1 to N-1 do
%p A106100 M2:= map(t -> (t, t+10^d, t+2*10^d), M2);
%p A106100 M1:= map(t -> (t, t+10^d), M1);
%p A106100 od:
%p A106100 sort(convert({2} union select(isprime,M2 minus M1),list)); # _Robert Israel_, Jun 19 2016
%t A106100 Select[Prime[Range[10000]], Max[IntegerDigits[ # ]]==2&]
%o A106100 (PARI) isok(p) = isprime(p) && (vecmax(digits(p)) == 2); \\ _Michel Marcus_, Jan 02 2019
%Y A106100 Cf. A106093, A106094, A106095, A106096, A106097, A106098, A106099.
%K A106100 nonn,base
%O A106100 1,1
%A A106100 _Zak Seidov_, May 07 2005
%E A106100 More terms from _Rick L. Shepherd_, May 22 2005