247165843
domain: N
Appears in sequences
- a(n) = (1 - (-7)^n)/8.at n=10A014989
- Gaussian binomial coefficient [ n,10 ] for q=-7.at n=1A015393
- a(n) = 6*a(n-1) + 7*a(n-2), a(0) = 0, a(1) = 1.at n=11A015552
- Cyclotomic polynomials at x=7.at n=22A019325
- Cyclotomic polynomials at x = -7.at n=11A020506
- Zsigmondy numbers for a = 7, b = 1: Zs(n, 7, 1) is the greatest divisor of 7^n - 1^n (A024075) that is relatively prime to 7^m - 1^m for all positive integers m < n.at n=21A064083
- Semiprimes of the form m^10 - m^9 + m^8 - m^7 + m^6 - m^5 + m^4 - m^3 + m^2 - m + 1.at n=2A245483
- a(n) = Sum_{j=0..10} (-n)^j.at n=7A269486