43257

Appears in sequences

• Triangle, read by rows, where row n equals the inverse binomial transform of column n in the rectangular table A124530.at n=49A124539
• Sum of pyramid weights in all skew Dyck paths of semilength n.at n=7A129164
• 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 either SmallGroup(2187,247)-#1;5 or SmallGroup(2187,247)-#1;9.at n=14A250242