478297

Appears in sequences

• a(n) = (1 - (-9)^n)/10.at n=6A014991
• Triangle of q-binomial coefficients for q=-9.at n=29A015121
• Triangle of q-binomial coefficients for q=-9.at n=34A015121
• Gaussian binomial coefficient [ n,6 ] for q = -9.at n=1A015332
• a(n+1) = 8*a(n) + 9*a(n-1), a(0) = 0, a(1) = 1.at n=7A015577
• Cyclotomic polynomials at x=3.at n=28A019321
• Cyclotomic polynomials at x=9.at n=14A019327
• Cyclotomic polynomials at x=-3.at n=28A020502
• Cyclotomic polynomials at x=-9.at n=7A020508
• a(n) = n^6 - n^5 + n^4 - n^3 + n^2 - n + 1.at n=9A060888
• Zsigmondy numbers for a = 3, b = 1: Zs(n, 3, 1) is the greatest divisor of 3^n - 1^n (A024023) that is relatively prime to 3^m - 1^m for all positive integers m < n.at n=27A064079
• Numbers of the form (3^s+1)/(3^r+1) for s > 1, 1 <= r <= s-1.at n=10A079672
• a(n) = (n+1)^(n-1)/(n+2) + (-1)^n/(n+2).at n=8A083063
• a(n) = sigma_4(n^2)/sigma_2(n^2).at n=26A084218
• Overpseudoprimes to base 3.at n=28A141350
• Partial sums of round(3^n/5).at n=13A178543
• Semiprimes of the form m^6 - m^5 + m^4 - m^3 + m^2 - m + 1.at n=4A245482
• a(n) = n^12 - n^10 + n^8 - n^6 + n^4 - n^2 + 1.at n=3A270204