331047

Appears in sequences

• a(0) = 1, a(1) = 1 and for n >= 2, a(n) = floor(4 * a(n-2) * a(n-1) / (a(n-2) + a(n-1))).at n=30A093335
• Largest k such that k <= 81*(number of digits of k^n)*(number of digits of k^(n+1)).at n=10A130179