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 A231408 #8 May 30 2019 11:19:50 %S A231408 1,2,4,6,9 %N A231408 Positive integers that are not the sum of distinct odd primes. %C A231408 Using elementary methods, Dressler proved that 9 is the largest integer which is not the sum of distinct odd primes. %H A231408 R. E. Dressler, <a href="https://dx.doi.org/10.1090/S0002-9939-1972-0292746-6">A stronger Bertrand's postulate with an application to partitions</a>, Proc. Amer. Math. Soc., 33 (1972), 226-228. %H A231408 R. E. Dressler, <a href="https://doi.org/10.1090/S0002-9939-1973-0309842-8">Addendum to "A stronger Bertrand’s postulate with an application to partitions"</a>, Proc. Am. Math. Soc., 38 (1973), 667. %Y A231408 Cf. A121571, A231407. %K A231408 fini,full,nonn %O A231408 1,2 %A A231408 _Jonathan Sondow_, Nov 24 2013