OFFSET
1,1
COMMENTS
LINKS
Ray Chandler, Table of n, a(n) for n = 1..1000
EXAMPLE
Prime 17 = 2 + 3 + 5 + 7 = a(2) is equal to the sum of the first 4 = 2^2 primes.
Prime 24133 = a(4) is equal to sum of the first 100 = 10^2 primes.
MATHEMATICA
s=0; Do[s=Sum[Prime[k], {k, 1, n^2}]; If[PrimeQ[s], Print[{n, n^2, s}]], {n, 1, 154}]
Select[Table[Total[Prime[Range[n^2]]], {n, 500}], PrimeQ] (* Harvey P. Dale, Jul 20 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alexander Adamchuk, Aug 25 2006
EXTENSIONS
More terms from Ray Chandler, Dec 02 2018
STATUS
approved