496966

Appears in sequences

• Triangle read by rows: row n contains sequence S_n = [s(1), ..., s(n)] where s(1) is the least semiprime pq such that the recurrence s(i+1) = sum of two prime factors of s(i) generates a chain of exactly n semiprimes.at n=55A171095
• a(n) is the first semiprime that starts a sequence of n distinct semiprimes under the map A001414.at n=10A345407