221504

Appears in sequences

• Fibonacci sequence beginning 2, 19.at n=21A022119
• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = (F(2), F(3), F(4), ...).at n=23A025071