OFFSET
1,1
REFERENCES
R. K. Guy, Unsolved Problems in Number Theory, section C2.
LINKS
Ray Chandler, Table of n, a(n) for n = 1..10000
Carlos Rivera, Puzzle 46. Primes expressible as sum of consecutive primes in K ways, The Prime Puzzles and Problems Connection.
FORMULA
A054845(a(n)) = 2. - Ray Chandler, Sep 20 2023
EXAMPLE
5 can be expressed as 5 or 2+3, so 5 is in the sequence.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jud McCranie, May 30 2000
STATUS
approved