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 A216308 #17 Jun 21 2022 04:27:02
%S A216308 34,127,202,223,226,265,352,355,412,433,454,463,496,619,694,730,838,
%T A216308 853,859,967,976,1000,1003,1042,1093,1105,1171,1177,1321,1339,1399,
%U A216308 1438,1444,1486,1528,1741,1759,1765,1774,1783,1795,1828,1969,2047,2050,2071,2080
%N A216308 Values of k such that 10*k+7 and 10*k+9 are the only primes between 10*k and 10*k+9.
%H A216308 V. Raman, <a href="/A216308/b216308.txt">Table of n, a(n) for n = 1..10000</a>
%F A216308 a(n) >> n log^2 n. - _Charles R Greathouse IV_, Sep 07 2012
%t A216308 t = {}; Do[ps = Select[Range[10*n, 10*n + 9], PrimeQ]; If[ps == {10*n + 7, 10*n + 9}, AppendTo[t, n]], {n, 0, 2599}]; t (* _T. D. Noe_, Sep 04 2012 *)
%Y A216308 Cf. A032352, A007811, A078494.
%K A216308 nonn
%O A216308 1,1
%A A216308 _V. Raman_, Sep 03 2012