196890121

Appears in sequences

• Cyclotomic polynomials at x=5.at n=21A019323
• Zsigmondy numbers for a = 5, b = 1: Zs(n, 5, 1) is the greatest divisor of 5^n - 1^n (A024049) that is relatively prime to 5^m - 1^m for all positive integers m < n.at n=20A064081
• a(n) = sigma_3(n^3)/sigma(n^3).at n=24A077454
• a(n) = n^12 - n^11 + n^9 - n^8 + n^6 - n^4 + n^3 - n + 1.at n=5A269483