50240

Appears in sequences

• a(n) = 49*n^2 + 2*n.at n=31A157365
• Coordination sequence for (2,6,6) tiling of hyperbolic plane.at n=24A265069
• E.g.f. S(x) satisfies: S(x) = Integral (1 + S(x)^2)^4 dx.at n=3A281439