301070

Appears in sequences

• Convolution of sum of cubes of divisors with itself.at n=11A087115
• Number of polygons formed outside a regular n-gon when every pair of vertices of the n-gon are joined by an infinite line.at n=45A344311
• G.f. A(x,y) satisfies: -y = f(-x,-A(x,y)), where f(x,y) = Sum_{n=-oo..oo} x^(n*(n+1)/2) * y^(n*(n-1)/2) is Ramanujan's theta function.at n=59A354650
• Column 3 of triangle A354650: a(n) = A354650(n,3), for n >= 1.at n=6A354656