590409

Appears in sequences

• Denominators of continued fraction convergents to sqrt(195).at n=8A041363
• Expansion of (1 - x)/(1 - 28*x + x^2).at n=4A159668
• a(n) = n^4 + 3*n^3 - 3*n.at n=26A192398
• a(n) = Sum_{1 <= x_1, x_2 <= n} gcd(x_1, x_2, n)^4.at n=26A372926