526851

Appears in sequences

• Partial sums of dodecahedral numbers (A006566).at n=26A116689
• Triangular numbers that are the product of two triangular numbers greater than 1.at n=41A188630
• Number of ways to choose two points on a centered hexagonal grid of size n.at n=18A241219
• G.f. A(x) = Sum_{n>=0} x^n/a(n) satisfies: A(x) = A(x^2) + Integral A(x^2) dx.at n=79A294640
• Triangular numbers that can be represented as a sum of two distinct triangular numbers, and as a product of two triangular numbers greater than 1.at n=20A295768