%I #8 May 30 2019 11:19:50

%S 1,2,4,6,9

%N Positive integers that are not the sum of distinct odd primes.

%C Using elementary methods, Dressler proved that 9 is the largest integer which is not the sum of distinct odd primes.

%H 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 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 Cf. A121571, A231407.

%K fini,full,nonn

%O 1,2

%A _Jonathan Sondow_, Nov 24 2013