2544696

Appears in sequences

• a(n) = pg(3, n) * pg(4, n) * ... * pg(n, n) where pg(m, n) is the n-th m-th-order polygonal number.at n=6A241453
• Number of inequivalent 3 X 3 matrices with entries in {1,2,3,..,n} up to vertical and horizontal reflections.at n=6A282614
• Triangle read by rows: T(n,m) is the number of pattern classes in the (n,m)-rectangular grid with 6 colors and n>=m, two patterns are in the same class if one of them can be obtained by a reflection or 180-degree rotation of the other.at n=9A286893