69044domain: NAppears in sequencesAverages of two consecutive even cubes: (n^3 + (n+2)^3)/2.at n=20A173961Floor((n+1/n)^3).at n=40A197602Number of primes p with 10^(n-1) < p < 10^n such that 10^n-p is also prime.at n=6A359120