228521domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p+2, p*(p+2)+18 and p*(p+2)+20 are also prime.at n=22A130737Number of 6-cycles in the n-triangular honeycomb obtuse knight graph.at n=34A290392Primes p such that the sum of p and the next two primes is the product of two consecutive primes.at n=11A351579Prime numbersat n=20305