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 A153136 #10 Jul 22 2025 06:16:33 %S A153136 2,7,13,43,103,1627,25349,315743,7338823,42939980423 %N A153136 Smallest sequence of primes such that no sum of at least two terms is prime. %o A153136 (PARI) a=[];for(n=1,10, forprime(p=2,,setsearch(a,p)&&next;for(i=1,2^#a-1,isprime(normlp(vecextract(a,i),1)+p)&&next(2));a=concat(a,p);print1(p","))) \\ Very simplistic, should at least avoid an odd number of odd primes in the partial sum of earlier terms. \\ _M. F. Hasler_, Jan 29 2015 %Y A153136 Cf. A153137, A153138, A133660, A052349, A254337, A254341. %K A153136 more,nonn %O A153136 1,1 %A A153136 _Benoit Jubin_, Dec 19 2008 %E A153136 a(8)-a(10) from _Donovan Johnson_, Dec 23 2008