-679

Appears in sequences

• Expansion of e.g.f. cos(tan(x))*x, odd terms only.at n=3A009071
• Partition function coefficients for square lattice spin 2 Ising model.at n=48A010108
• Expansion of 1/(1-x-x^2+2*x^3).at n=33A077948
• a(n) = Sum_{k=0..n} A105595(k)*(-1)^k*A105595(n-k) (interpolated zeros suppressed).at n=29A105596
• Coefficients in the expansion of B^7/C, in Watson's notation of page 118.at n=25A160534
• a(0)=a(1)=1, a(n) = 2*a(n-1)- A010686(n), n>1.at n=10A173114
• A triangular sequence of polynomial coefficients:p(x,n)=Sum[Eulerian[n + 1, k]*Product[x + i, {i, 0, n - k + 1}]*(-x)^k, {k, 0, n}]/x.at n=13A174833
• Triangle T(n,k) = A015440(k) - A015440(n) + A015440(n-k), read by rows.at n=30A176263
• Triangle T(n,k) = A015440(k) - A015440(n) + A015440(n-k), read by rows.at n=33A176263
• Expansion of chi(x^3) / chi(x) in powers of x where chi() is a Ramanujan theta function.at n=55A227398
• Expansion of Product_{k>0} (1 - d(k)*x^k), where d(k) is the number of divisors of k.at n=37A321619
• a(n) = (-1)^n * exp(n) * Sum_{k>=1} (-1)^k * n^(k-1) * k^n / k!.at n=5A334258
• a(n) = Sum_{d|n} (-1)^(n/d-1) * binomial(d+n/d-1, d).at n=31A344777
• E.g.f. satisfies A(x) = exp( x * exp(x) / A(x)^3 ).at n=4A362672
• Expansion of g.f. A(x) = Sum_{n=-oo..+oo} x^n * (i + x^n)^(2*n), where i^2 = -1.at n=34A363569