171409

Appears in sequences

• a(n) = floor(Fibonacci(n)/3).at n=29A004696
• a(n) = (F(8*n+5) - 2)/3, where F = A000045 (the Fibonacci sequence).at n=3A049658
• a(n) = Sum_{i=0..n} (C(n,i) mod 2)*Fibonacci(2*i).at n=13A051656
• Expansion of the Jacobi elliptic function sn(x,k) at k = 2 (odd powers only).at n=4A370542