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 A229060 #9 Sep 08 2022 08:46:05 %S A229060 2,3,5,7,11,13,17,19,23,31,37,43,53,59,67,73,79,83,101,109,113,127, %T A229060 137,151,157,163,167,173,179,181,191,197,199,223,227,229,233,239,251, %U A229060 257,269,271,281,283,307,317,331,337,347,359,367,373,389,409,421,431,433 %N A229060 Smallest of 13 consecutive primes whose sum is not a prime. %H A229060 Vincenzo Librandi, <a href="/A229060/b229060.txt">Table of n, a(n) for n = 1..1000</a> %e A229060 31 is in the sequence because 31+37+41+43+47+53+59+61+67+71+73+79+83 = 745 and 745 = 5*149. %t A229060 Transpose[Select[Partition[Prime[Range[200]], 13, 1], !PrimeQ[Total[#]]&]][[1]] %o A229060 (Magma) [NthPrime(n): n in [1..120] | not IsPrime(&+[NthPrime(n+s): s in [0..12]])]; %Y A229060 Cf. A228201. %K A229060 nonn %O A229060 1,1 %A A229060 _Vincenzo Librandi_, Sep 13 2013