104383

Properties

Appears in sequences

• Primes that are concatenations of k-th composite and k-th prime.at n=19A038532
• a(n) = a(n-1) + a(n-2) + a([n/3]) + a([2n/3]), where a(0) = 1, a(1) = 1, a(2) = 1.at n=21A298344
• Prime numbersat n=9968