3138105961
domain: N
Appears in sequences
- a(n) = (1 - (-9)^n)/10.at n=10A014991
- Gaussian binomial coefficient [ n,10 ] for q=-9.at n=1A015397
- a(n+1) = 8*a(n) + 9*a(n-1), a(0) = 0, a(1) = 1.at n=11A015577
- Cyclotomic polynomials at x=9.at n=22A019327
- Cyclotomic polynomials at x=-9.at n=11A020508
- Numbers of the form (3^s+1)/(3^r+1) for s > 1, 1 <= r <= s-1.at n=22A079672
- Partial sums of round(3^n/5).at n=21A178543
- 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=3A245483
- a(n) = Sum_{j=0..10} (-n)^j.at n=9A269486