A231408 Positive integers that are not the sum of distinct odd primes.

1, 2, 4, 6, 9

Offset: 1

Author

Jonathan Sondow, Nov 24 2013

Keywords

• fini
• full
• nonn

Comments

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

Links

• R. E. Dressler, A stronger Bertrand's postulate with an application to partitions, Proc. Amer. Math. Soc., 33 (1972), 226-228.
• R. E. Dressler, Addendum to "A stronger Bertrand’s postulate with an application to partitions", Proc. Am. Math. Soc., 38 (1973), 667.

Crossrefs

Cf. A121571, A231407.