870169

Properties

Appears in sequences

• Expansion of tanh(tan(x)*exp(x)).at n=9A009814
• a(n) = -a(n-1) + a(n-2) - F(-n) + 1, a(0) = 1, a(1) = -1, where F() = Fibonacci numbers A000045.at n=24A175722
• Prime numbersat n=69110