OFFSET
1,2
COMMENTS
If S_k denotes sum of the first k primes (A007504(n)), there is a square strictly between S_k and S_{k+1} for all k.
REFERENCES
R. Honsberger, Problem 88, The Sums of the Primes, Mathematical Morsels, MAA, 1978, pp. 221-222.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 01 2012
STATUS
approved