-24192

Appears in sequences

• Dirichlet convolution of Ramanujan numbers (A000594) with themselves.at n=5A034778
• Triangular sequence of coefficients from the expansion of the derivative of the Bernoulli polynomial function: p(x,t) = t*exp(x*t)/(exp(t)-1); q(x,t) = p'(x,t) = dp(x,t)/dt.at n=36A137777
• The decomposition of a certain labeled universe (A052584), triangle read by rows.at n=36A159749
• Triangle, read by rows, T(n, k) = (-1)^n * n!/(k*k!) * binomial(n-1, k-1) * binomial(n, k-1).at n=42A176013
• a(n) is the permanent of the unipotent Sylvester-Kac tridiagonal matrix of order n having main diagonal [0, 2, ..., 2*(n-1)], superdiagonal [1, 2, ..., n-1], and [subdiagonal 1-n, 2-n, ..., -1].at n=7A390821