375601
domain: N
Appears in sequences
- Cyclotomic polynomials at x=5.at n=20A019323
- Cyclotomic polynomials at x=-5.at n=20A020504
- a(n) = n^4 - n^3 + n^2 - n + 1.at n=25A060884
- a(n) = n^8 - n^6 + n^4 - n^2 + 1.at n=5A060892
- 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=19A064081
- a(n) = sigma_4(n^4)/sigma_2(n^4).at n=4A077457
- Starting positions of strings of five 6's in the decimal expansion of Pi.at n=8A083627
- a(n) = sigma_4(n^2)/sigma_2(n^2).at n=24A084218
- Overpseudoprimes to base 5.at n=21A141390