OFFSET
1,1
COMMENTS
Conjecture: each term > 4 appears at least twice.
Every term of the sequence is even, because every term is a difference of two odd primes.
EXAMPLE
MATHEMATICA
Differences[NextPrime/@Select[Prime@Range[500], NextPrime[#, -1]==#-2&]] (* Giorgos Kalogeropoulos, Jul 28 2021 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Luca Santarsiero, Jul 28 2021
STATUS
approved