-247

Appears in sequences

• a(n) = 3^n - n^8.at n=2A024031
• Matrix inverse of Euler's triangle A008292.at n=34A055325
• n - reversal of base 20 digits of n (written in base 10).at n=34A055967
• n - reversal of base 20 digits of n (written in base 10).at n=55A055967
• Triangle of T(n,k) coefficients of polynomials with first n prime numbers as roots.at n=11A070918
• First order recursion: a(0) = 1; a(n) = phi(n) - a(n-1) = A000010(n) - a(n-1).at n=50A083239
• Expansion of a modular function for Gamma(7).at n=67A108482
• Expansion of (1-4*x)/(1-x*(1-x)^3).at n=10A119306
• Expansion of (eta(q) * eta(q^6))^7 / (eta(q^2) * eta(q^3))^5 in powers of q.at n=31A123532
• Triangle read by rows, T[n,2i-1]=2T[n-1,i],T[n,2i]=2k-1-2T[n-1,i].at n=36A138583
• Triangle T(n,k) = gcd(n,k)-binomial(n,k), 0<=k<=n.at n=60A140682
• Triangle read by rows: imaginary part of polylog expansion of Eulerian numbers: p(x,n) = (1 - I*x)^(n + 1)*PolyLog(-n, I*x)/x.at n=35A143197
• Triangle formed by coefficients of the expansion of p(x, n), where p(x,n) = (1+x-x^2)^(n+1)*Sum_{j >= 0} (j+1)^n*(-x + x^2)^j.at n=51A156890
• Numerator of Euler(n, 13/32).at n=2A157777
• Triangle read by rows: T(n,0) = n+1, T(n,k) = 2*T(n-1,k) - T(n-1,k-1), T(n,k) = 0 if k > n and if k < 0.at n=29A159856
• An absolute difference sequence based on A087655: a(n)=If[Mod[A087655(n), 3] == 1, a(n - 1) - (-1)^n*n, a(n - 1) + (-1)^n*n].at n=63A174218
• Riordan array T((1-x)^(-2) | 2x-1) read by rows.at n=21A181690
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min{2i+j,i+2j} (A204002).at n=37A204003
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of min(i,j)^2 (A106314).at n=10A204020
• Triangle read by rows: T(n,k) is coefficient of x^(n-k) in consecutive prime rooted polynomial of degree n, P(x) = Product_{k=1..n} (x-p(k)) = 1*x^n + T(n,1)*x^(n-1)+ ... + T(n,k-1)*x + T(n,k), for 1 <= k <= n.at n=8A238146