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 A228200 #15 Sep 08 2022 08:46:05 %S A228200 2,5,7,11,13,17,19,23,41,43,53,59,61,67,71,73,97,101,103,113,137,151, %T A228200 163,167,181,191,223,227,229,233,239,251,257,263,269,271,281,283,293, %U A228200 307,311,313,317,331,337,349,353,379,383,401,409,419,421,431,439,443,457,461 %N A228200 Smallest of 9 consecutive primes whose sum is not a prime. %H A228200 Vincenzo Librandi, <a href="/A228200/b228200.txt">Table of n, a(n) for n = 1..1000</a> %e A228200 59 is in the sequence because 59 + 61 + 67 + 71 + 73 + 79 + 83 + 89 + 97 = 679 and 679 is not a prime. %t A228200 Transpose[Select[Partition[Prime[Range[150]], 9, 1], !PrimeQ[Total[#]]&]][[1]] %o A228200 (Magma) [NthPrime(n): n in [1..120] |not IsPrime(&+[NthPrime(n+s): s in [0..8]])]; %Y A228200 Cf. A189571, A127336. %K A228200 nonn,easy %O A228200 1,1 %A A228200 _Vincenzo Librandi_, Aug 20 2013