4488211domain: NAppears in sequencesNumerator of Product_{j=1..n-1} ((3*j+1)/(3*j+2)).at n=18A271919Numerator of Product_{j=1..n-1} ((3*j+1)/(3*j+2)).at n=19A271919Sum of two (possibly negative) coprime cubes in at least 3 ways, but not the sum of 2 noncoprime cubes.at n=13A293651