1807263

Appears in sequences

• a(0) = 1, a(n+1) = 3 * a(n) - F(n)*(F(n) + 1), where F(n) = A000045(n) is n-th Fibonacci number.at n=14A011769
• Expansion of exp(3*x) - exp(x)*(1-BesselI_0(2*x)).at n=13A081673