64621

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 9x + 10.at n=27A023327
• Numerators of continued fraction convergents to sqrt(862).at n=8A042664
• Number of multisets that occurring as the peak heights multiset of a Dyck n-path that are the also the peak heights multiset of a smaller Dyck path.at n=16A208740
• Primes p such that prime(floor(p/10) + (p mod 10)) = p.at n=4A224827
• Primes p = prime(k) such that the representation of p can be split in two parts whose sum is k.at n=5A224843
• Primes of the form triangular(p) + 1, where p is a prime.at n=18A231988
• Primes equal to a hexagonal number plus 1.at n=40A285790
• Compound filter: a(n) = P(A055881(n), A278236(n)), where P(n,k) is sequence A000027 used as a pairing function.at n=22A286381
• Compound filter: a(n) = P(A257993(n), A278226(n)), where P(n,k) is sequence A000027 used as a pairing function.at n=22A286382
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 414", based on the 5-celled von Neumann neighborhood.at n=30A288052
• a(n) is the least number k such that exactly fraction 1/n of the members of the reduced residue system mod k are prime, or 0 if there is no such k.at n=8A307711
• Primes in A338529/2.at n=26A338533
• Primes p such that primepi(p)-1 divides p-1.at n=13A359044
• Odd numbers k that divide A005941(k).at n=7A364549
• Primes that are the sum of prime factors (with multiplicity) of a triprime which is the concatenation of three consecutive primes.at n=6A386228
• Prime numbersat n=6463