241251

Appears in sequences

• Juxtapose pairs of primes.at n=26A007795
• Concatenations of pairs of primes that differ by 10.at n=19A104719
• a(n) is the smallest integer k > 2*n such that Product_{i=1..n} (k - i) has no prime factor p in n < p < 2*n.at n=45A386620