671568

Appears in sequences

• Exponential generating function is exp(2*x/(1-x))/(1-x).at n=7A087912
• A(n,k) = n! * Laguerre(n,-k); square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=52A289192
• T(n, k) = (n - k)! * [x^(n-k)] exp(k*x/(1 - x))/(1 - x). Triangle read by rows, T(n, k) for 0 <= k <= n.at n=47A343847
• T(n, k) = n! * [x^n] exp(k * x/(1 - x))/(1 - x). Triangle read by rows, T(n, k) for 0 <= k <= n.at n=30A344048
• Triangle read by rows: T(n, k) = 2^k * hypergeom([-n, -k], [], 1/2).at n=35A375854