195805

Appears in sequences

• Denominators of continued fraction convergents to sqrt(445).at n=8A041847
• a(n) = n^4 + 3*n^2 + 1.at n=21A057721
• Numbers generated by the Fibonacci polynomial x^4 + 3x^2 + 1.at n=20A085151
• First differences of Chebyshev polynomials S(n,443) = A098254(n) with Diophantine property.at n=2A098256
• Numbers n of the form p^2-p-1 = A165900(p), for prime p, such that n^2-n-1 = A165900(n) is also prime.at n=18A237527