71245

Appears in sequences

• Expansion of g.f. -x*(10*x^4+12*x^3-x^2-3*x-3)/((x^2+x-1)*(4*x^3+x^2-x-1)).at n=22A134704
• Hyper-Wiener index of a benzenoid consisting of a double-step zig-zag chain of n hexagons (n >= 2, s = 2123; see the Gutman et al. reference).at n=10A193396