252700domain: NAppears in sequencesa(n) = n^2*(n+1)^2*(n+2)/12.at n=19A004302a(n) = floor(n/2) * floor((n-1)/2) * floor((n-2)/2) * floor((n-3)/2) * floor((n-4)/2) / 12.at n=42A028725Sum of third powers of two consecutive primes.at n=14A1335341/15840 of the volume of a primitive 3-simplex.at n=17A295507