392501

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 50.at n=19A031638
• Denominators of continued fraction convergents to sqrt(629).at n=8A042207
• a(n) = n^4 + 3*n^2 + 1.at n=25A057721
• Numbers generated by the Fibonacci polynomial x^4 + 3x^2 + 1.at n=24A085151
• First differences of Chebyshev polynomials S(n,627) = A098260(n) with Diophantine property.at n=2A098262