OFFSET
1,1
FORMULA
a(n) = prime(2n) + prime(2n+2) + prime(2n+4).
EXAMPLE
39 is in the sequence since it is the sum of 3 consecutive even-indexed primes as 7 + 13 + 19 = 39, where 7 is the 4th prime, 13 is the 6th prime and 19 is the 8th prime..
MATHEMATICA
Table[Prime[2 n] + Prime[2 n + 2] + Prime[2 n + 4], {n, 80}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Jun 12 2021
STATUS
approved