250753domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 54*p-1, 54*p+1 and 60*p-1, 60*p+1 are twin primes.at n=20A138698Number of strings of numbers x(i=1..8) in 0..n with sum i^2*x(i)^3 equal to 64*n^3.at n=26A184323Prime numbersat n=22094