316213

Properties

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = A014306.at n=50A024467
• Cumulative sum of triple factorial numbers a(n) = n!!! (A007661).at n=17A114347
• Prime numbersat n=27291