42657

Appears in sequences

• a(0) = 1, a(n) = 1 + 2*3 + 4*5 + 6*7 + ... + (2n)*(2n+1) for n > 0.at n=31A098931
• a(n) = (n^3 + 3*n - 2)/2.at n=43A132127
• Number of polyominoes in which every cell has coprime coordinates.at n=14A366020