39536640

Appears in sequences

• a(n) is the least integer of the form (n-2)(n-4)...(n-2k)/n. 0 if no such number exists.at n=27A109898
• a(n+1) = 2*a(n) + 16*a(n-1), a(0)=0, a(1)=1.at n=12A161007