283725

Appears in sequences

• a(n) = n*(n + 1)*(n + 2)*(4*n - 3)/6.at n=25A264851
• Triangular array read by rows: row n shows the coefficients of this polynomial of degree n: p(x,n) = ((x+r)^n - (x+s)^n)/(r - s), where r = 3 and s = 2.at n=47A327316