1614600

Appears in sequences

• Expansion of (1-4*x)^(15/2).at n=22A020927
• Numbers that can be written as (a^2-1)(b^2-1) in three or more distinct ways.at n=15A134856
• Number of (n+1)X(3+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..3 introduced in row major order.at n=8A231358
• a(n) is the smallest positive integer k, such that set of pairwise gcd of k, k+1, ..., k+n has a cardinality of n.at n=26A356371