497280

Appears in sequences

• a(n) = binomial(n+2,3)*4^3.at n=34A141478
• Fourier coefficients of Eisenstein series of degree 2 and weight 4: a(n) = coefficient of the matrix [n, 0; 0, 1] with determinant n.at n=2A323991
• Triangle T(n,k) read by rows: connected topologies of Goldstone diagrams with n interactions and k external potentials.at n=24A328923