-1968

Appears in sequences

• Expansion of x*(-1+5*x-6*x^2+x^3) / ( (2*x-1)*(x^3-3*x^2+1) ).at n=11A122167
• Triangle by rows with row n formed by coefficients of the characteristic polynomial of the n X n tridiagonal matrix with m_{i,i} = 2 for i=1..n, m_{i,i-1} = m_{i,i+1} = -1 for i=2..n-1, and m_{1,2} = m_{n,n-1} = -2.at n=58A140882
• A triangle sequence from matrix polynomials of a three symbol type {0, 1, -1}: c(i,k)= Floor[Mod[i/2^k, 2]]; M(d)=Table[If[Sum[c(n, k)*c(m, k), {k, 0, d - 1}] == 0, 1, If[Sum[c(n, k)*c(m, k), {k, 0, d - 1}] == 1, -1, 0]], {n, 0, d - 1}, {m, 0, d - 1}].at n=58A158417
• Calendar Problem #27, April 2012 Mathematics Teacher.at n=5A208646
• Expansion of (eta(q)*eta(q^3))/eta(q^2)^2 in powers of q.at n=33A293306
• Coefficients in the power series expansion of A(x) = Sum_{n=-oo..+oo} n * x^(2*n+2) * (1 - x^n)^(n+1).at n=47A357406
• Expansion of e.g.f. 1/(1 - x * exp(-x * exp(-x))).at n=8A362273