12183560

Appears in sequences

• Expansion of (1+x)/(1-x)^12.at n=15A057788
• Number of ways to select 15 knights from n knights sitting at a round table if no adjacent knights are chosen.at n=11A188225
• a(n) = rf(n, n+2)/(n+2)! - rf(n, n)/n!, rf the rising factorial A265609.at n=13A265610