152902

Appears in sequences

• G.f. satisfies: A(x) = x + 2*x*A(A(x)) - x*A(x)*A(A(A(x))).at n=7A119736
• Number of ways to remove n oranges from an infinite stack of oranges whose m-th layer is an m X (m+1) rectangle.at n=17A274594
• a(n) = 3*a(n-1) - a(n-2) - 4*a(n-3) + 2*a(n-4) for n >= 4, where a(0) = 2, a(1) = 4, a(2) = 8, a(3) = 16, a(4) = 34, a(5) = 70 .at n=16A288170