101341

Properties

Appears in sequences

• Concatenation of prime p and nextprime(p) is prime -> cycles of 2 steps possible.at n=22A036339
• Leading diagonal of triangle in A072467.at n=35A072468
• a(n) = A077739(n)/n.at n=34A077740
• a(n) = A078213(n)/n.at n=34A078214
• Number of imprimitive (periodic) 2n-bead black-white reversible complementable necklaces with n black beads.at n=26A115124
• Largest prime factor of n! + 2n - 1.at n=13A139467
• Primes in A343812.at n=37A343814
• a(n) = Sum_{k=0..floor(n/3)} binomial(n,k) * binomial(n+3*k,n-3*k).at n=10A389154
• Primes k such that the concatenation of (b, k, b) and (k, b, k) are both prime, where b is the binary representation of k.at n=30A389801
• Prime numbersat n=9705