163427632719
domain: N
Appears in sequences
- Golden rectangle numbers: F(n) * F(n+1), where F(n) = A000045(n) (Fibonacci numbers).at n=28A001654
- a(n) = F(n)*F(n-1) if n odd otherwise F(n)*F(n-1)-1, where F = Fibonacci numbers A000045.at n=28A059840
- a(n) = (Lucas(4n+1)-1)/5, or Fibonacci(2n)*Fibonacci(2n+1), or A081017(n)/5.at n=14A081018
- a(2*n) = F(3*n)*F(3*n+2), a(2*n+1) = F(3*n+1)*F(3*n+2), where F = A000045.at n=19A114703
- Denominators a(n) of Pythagorean approximations b(n)/a(n) to 1/2.at n=27A195547
- Numerators b(n) of Pythagorean approximations b(n)/a(n) to 2.at n=8A195615