OFFSET
1,1
COMMENTS
Even numbers such that exactly one of its distinct prime factors is the lesser of twin primes (see A001359). For example, 70 is in the sequence since it is even and 5 is the only distinct prime factor of 70 such that 5+2 is also prime.
EXAMPLE
10 is in the sequence since it has exactly one pair of prime factors 2,5 which sum to a prime.
12 is in the sequence since it has one pair of prime factors 2,3 which sum to a prime.
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Feb 14 2022
STATUS
approved