OFFSET
1,1
COMMENTS
All terms are even.
Numbers k such that A337574(k) is prime.
LINKS
Robert Israel, Table of n, a(n) for n = 1..8300
EXAMPLE
a(2)=6 is in the sequence because 2*17 + 3*19 + 5*23 + 7*29 + 11*31 + 13*37 = 1231 is prime.
MAPLE
P:= <seq(ithprime(i), i=1..6000)>:
select(t -> isprime(P[1..t]^%T . P[t+1..2*t]), 2*[$1..1500]);
MATHEMATICA
Select[Range[1326], PrimeQ@ Sum[Prime[i] Prime[# + i], {i, #}] &] (* Michael De Vlieger, Sep 01 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
J. M. Bergot and Robert Israel, Sep 01 2020
STATUS
approved