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 A061238 #24 May 14 2025 14:54:02
%S A061238 2,11,29,47,83,101,137,173,191,227,263,281,317,353,389,443,461,479,
%T A061238 569,587,641,659,677,821,839,857,911,929,947,983,1019,1091,1109,1163,
%U A061238 1181,1217,1289,1307,1361,1433,1451,1487,1523,1559,1613,1667,1721,1811,1847
%N A061238 Prime numbers == 2 (mod 9).
%C A061238 A010888(a(n)) = 2. - _Reinhard Zumkeller_, Feb 25 2005
%C A061238 Except for the first term "2", all current prime numbers are of the form: 18*n-7. - _Vladimir Joseph Stephan Orlovsky_, Jul 13 2011
%H A061238 Daniel Starodubtsev, <a href="/A061238/b061238.txt">Table of n, a(n) for n = 1..10000</a>
%F A061238 a(n) ~ 6n log n. - _Charles R Greathouse IV_, May 14 2025
%t A061238 Select[ Range[ 2000 ], PrimeQ[ # ] && Mod[ #, 9 ] == 2 & ]
%t A061238 Join[{2}, Select[Range[11, 5000, 18], PrimeQ]] (* _Vladimir Joseph Stephan Orlovsky_, Jul 13 2011 *) (* ~30 times faster *)
%o A061238 (Magma)[ p: p in PrimesUpTo(2000) | p mod 9 in {2} ]; // _Vincenzo Librandi_, Dec 25 2010
%o A061238 (PARI) select(n->n%9==2, primes(400)) \\ _Charles R Greathouse IV_, May 27 2014
%Y A061238 Cf. A061237..A061242.
%K A061238 nonn,easy
%O A061238 1,1
%A A061238 _Amarnath Murthy_, Apr 23 2001
%E A061238 More terms from _Robert G. Wilson v_, May 10 2001