28940

Appears in sequences

• Fundamental discriminants d uniquely characterizing all complex biquadratic fields Q(sqrt(-3),sqrt(d)) which have 3-class group of type (3,3) and second 3-class group isomorphic to SmallGroup(729,34).at n=16A250241
• Numbers n such that n!3 + 3^9 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=44A265378
• Expansion of Product_{k>=1} (1 - x^(18*k)) * (1 - x^(18*k-9)) * (1 + x^k) / (1 - x^k).at n=25A280947