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 A234850 #7 Dec 31 2013 17:52:27 %S A234850 2,2,3,7,11,29,43,53,61,73,97,139,149,179,223,283,313,349,373,461,467, %T A234850 491,541,599,619,659,727,787,859,907,911,919,941,1019,1087,1091,1187, %U A234850 1223,1249,1283,1301,1321,1433,1471,1481,1511,1523,1543 %N A234850 Primes in A014692, i.e., of the form prime(k)-k+1, for some k. %C A234850 The first term is listed twice because A014692(1) = 2-1+1 = A014692(2) = 3-2+1 = 2 both are prime; thereafter the sequence A014692 is strictly increasing, so there is no other duplicate value. %F A234850 a(n) = prime(A234851(n)), prime = A000040. %o A234850 (PARI) for(k=1,999,isprime(p=prime(k)-k+1)&&print1(p",")) %Y A234850 Cf. A234695. %K A234850 nonn %O A234850 1,1 %A A234850 _M. F. Hasler_, Dec 31 2013