OFFSET
1,2
COMMENTS
Using elementary methods, Richert proved that 6 is the largest integer which is not the sum of distinct primes.
REFERENCES
H.-E. Richert, Über Zerlegungen in paarweise verschiedene Zahlen, Norsk. Mat. Tidsskr., 31 (1949), 120-122.
LINKS
R. E. Dressler, Addendum to "A stronger Bertrand’s postulate with an application to partitions", Proc. Am. Math. Soc., 38 (1973), 667.
FORMULA
a(3) = A121571(1).
CROSSREFS
KEYWORD
fini,full,nonn
AUTHOR
Jonathan Sondow, Nov 24 2013
STATUS
approved