OFFSET
1,1
LINKS
Paolo Xausa, Table of n, a(n) for n = 1..5000
MATHEMATICA
With[{upto=10^4}, Flatten[Position[Accumulate[Prime[Range[upto]]], _?(PrimeQ[#-1]&&PrimeQ[#+1]&)]]]
PROG
(PARI) isok(k) = my(s=vecsum(primes(k))); isprime(s-1) && isprime(s+1); \\ Michel Marcus, Oct 04 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Paolo Xausa, Oct 04 2023
STATUS
approved