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 A204138 #15 Sep 09 2022 06:55:27 %S A204138 7,5,19,11,23,61,137,229,599,1151,5953,101107,549149,16036673, %T A204138 28158577,468599149,63088004325217,3233514251032733,53815701950239487, %U A204138 14906561637522623977,248091402816751952399,1712077530466014390485776063 %N A204138 Primes in A001945, apart from initializing 6 terms. %C A204138 a(n) = A001945(A104499(n+1)). %H A204138 Paul Vanderveen, <a href="/A204138/b204138.txt">Table of n, a(n) for n = 1..48</a> %o A204138 (Haskell) %o A204138 a204138 n = a204138_list !! (n-1) %o A204138 a204138_list = filter ((== 1) . a010051) $ drop 6 a001945_list %Y A204138 Cf. A001945. %K A204138 nonn %O A204138 1,1 %A A204138 _Reinhard Zumkeller_, Jan 11 2012