56792

Appears in sequences

• Total area of all 1-histograms of length n.at n=6A094113
• E.g.f. exp(2x)/(1-3x).at n=5A097817
• Take alternate digits of 2^n.at n=29A268516
• Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], 2/3).at n=20A375600