405720

Appears in sequences

• Coordination sequence for E_6 lattice.at n=7A008399
• Numbers with prime factorization pqr^2s^2t^3.at n=26A190386
• Number of 2 X 2 matrices with entries in {0,1,...,n} and even determinant with no entry repeated.at n=29A277044
• T(n, k) = [x^k] n! [t^n] 1/(exp((V*(2 - 2*t + V))/(4*t))*sqrt(1 + V)) where V = W(-2*t*x) and W denotes the Lambert function. Table read by rows, T(n, k) for 0 <= k <= n.at n=40A343807