-12544

Appears in sequences

• Expansion of tanh(tanh(log(1+x))).at n=8A009820
• Matrix inverse of triangle A055140.at n=39A055141
• Coefficient array for orthogonal polynomials defined by C(2n,n).at n=30A128411
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of max(3i-j, 3j-i), as in A204156.at n=20A204157
• Triangle of coefficients in the logarithm of a generalized theta function.at n=100A227311
• Irregular triangle read by rows: coefficients of minimal polynomial of a certain algebraic number S2(2*k) from Q(2*cos(Pi/(2*k))) related to the regular (2*k)-gon.at n=24A228782
• G.f. A(x) satisfies A(x) = ( 1 + 4*x*(1 + x)*A(x) )^(1/2).at n=16A372037