81748

Appears in sequences

• a(n) = a(n-1) + 2*a(n-2) + 8*Fibonacci(n) + 2*Fibonacci(n-1); a(1) = 4, a(2) = 14.at n=12A291675
• Numbers k such that sigma(k) = psi(k) + tau(k)^4.at n=6A389546