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 A247679 #25 Jun 21 2022 14:05:51
%S A247679 35,125,143,161,215,287,305,323,341,377,395,413,485,539,575,611,629,
%T A247679 665,737,755,791,845,899,917,935,989,1007,1025,1043,1079,1115,1133,
%U A247679 1169,1205,1241,1295,1313,1331,1349,1385,1403,1421,1457,1475
%N A247679 Composite numbers congruent to 17 modulo 18.
%C A247679 Subsequence of A017257 (9n + 8).
%H A247679 Odimar Fabeny, <a href="/A247679/b247679.txt">Table of n, a(n) for n = 1..10000</a>
%F A247679 a(n) ~ 18n. - _Charles R Greathouse IV_, Sep 27 2014
%t A247679 Select[18Range[100] - 1, Not[PrimeQ[#]] &] (* _Alonso del Arte_, Sep 25 2014 *)
%t A247679 Select[Range[17,1500,18],CompositeQ] (* _Harvey P. Dale_, Jun 19 2022 *)
%o A247679 (PARI) lista(nn) = {forcomposite(n=1, nn, if ((n % 2) && ((n % 9) == 8), print1(n, ", ")); ); } \\ _Michel Marcus_, Sep 22 2014
%Y A247679 Cf. A017257, A247676, A247678, A247681, A247682, A247683.
%K A247679 nonn,easy
%O A247679 1,1
%A A247679 _Odimar Fabeny_, Sep 22 2014