249551

Appears in sequences

• Fibonacci sequence beginning 5, 11.at n=22A022136
• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023531, t = (F(2), F(3), F(4), ...).at n=25A024885
• Numbers k such that (4*10^(k-1) - 7)/3 is a plateau prime.at n=14A082697
• a(n) = k*Fibonacci(2*n+1) + (k+1)*Fibonacci(2*n), where k=5.at n=11A271359