12812800

Appears in sequences

• a(n) = least integer of the form (n+2)(n+4)...(n+2k)/n, or 0 if no such number exists.at n=17A109899
• Denominator of Laguerre(n, 3).at n=13A160626
• Irregular triangle read by rows: T(n,k) is the number of n-permutations whose fourth-longest cycle has length exactly k; n >= 0, 0 <= k <= floor(n/4).at n=31A350273