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 A099659 #14 Mar 12 2024 15:19:03
%S A099659 7,59,557,5557,55579,555557,5555567,55555559,555555587,5555555557,
%T A099659 55555555619,555555555559,5555555555593,55555555555573,
%U A099659 555555555555557,5555555555555573,55555555555555639,555555555555555559,5555555555555555621,55555555555555555567,555555555555555555619
%N A099659 a(n) is the least prime following A002279(n) repdigits.
%e A099659 n=2: 55 is followed by 59.
%t A099659 Table[NextPrime[5*(10^n-1)/9], {n, 1, 35}]
%Y A099659 Cf. A003618, A003617, A096497, A096498, A068104, A002275-A002283, A099656-A099668.
%K A099659 base,nonn
%O A099659 1,1
%A A099659 _Labos Elemer_, Nov 17 2004
%E A099659 Offset corrected by _Georg Fischer_, Mar 12 2024