1601600

Appears in sequences

• Triangle, read by rows, where T(n,k) = n!/(k!*(n-3*k)!*3^k) for n>=3*k>=0.at n=38A118931
• Denominator of Laguerre(n, 9).at n=13A160641
• Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.at n=10A305242
• a(n) is the least integer that can be expressed as the difference of two octagonal numbers in exactly n ways.at n=25A334037