-17280

Appears in sequences

• a(n) = n!*Sum_{k=1..n} mu(k)/k, where mu(k) is the Möbius function.at n=10A068337
• Determinant of the upper left n X n elements of the array T(n, m) in A109626.at n=8A111605
• Coefficients of the v=2 member of a family of certain orthogonal polynomials.at n=22A129462
• Second column (m=1) of triangle A129462 (v=2 member of a certain family).at n=5A129464
• Triangular sequence based on the coefficients of the magnetic model for q=1/2: p(x,t)=Exp[x*t]*((t^2 + 1/2 - 1)/(2*t + 1/2 - 2))^2.at n=17A137481
• A triangle of coefficients of a Moebius-transformed Pascal triangle as a sum: b(x,y,n)=Sum[Binomial[n,i]*x^i*y^(n-i),{i,0,n}]; transforms: x'->(a1*x + b1)/(c1*x + d1); y'->(a2*y + b2)/(c2*y + d2); b1(x,y,n)=(c1*x + b1)^(k)*(c2*y + d2)^(k)*b(x',y',n); f(x,y,z,n)=b1(x,y,n)+b1(y,z,n)+b1(z,x,n).at n=17A139815
• G.f. of the z^2 coefficients of the FP1 in the third column of the A156921 matrix.at n=5A156929
• Determinant of the n X n matrix with (i,j)-entry equal to (i^2+j^2)^n for all i,j = 0,...,n-1.at n=2A228379
• Expansion of a(q)^2 * b(q) in powers of q where a(), b() are cubic AGM theta functions.at n=45A231948
• Expansion of b(q)^3 - 3*c(q)^3 in powers of q where b(), c() are cubic AGM theta functions.at n=15A231961
• Expansion of b(q)^3 - (1/3)*c(q)^3 in powers of q where b(), c() are cubic AGM theta functions.at n=45A231962
• Nonzero terms of Product_{k=0..floor(log_2(n))} (1 + A004718(floor(n/(2^k)))).at n=40A325803
• The multiplicative inverse of the coefficients of the factorially normalized Bernoulli polynomials (provided they do not vanish, otherwise by convention 0).at n=40A358111