-7465176

Appears in sequences

• Expansion of g.f. (1+x)^2/((1 + x + x^2)*(1 + x - x^2)).at n=37A106511
• Expansion of (1 + x)^2/((1 + x + x^2)*(1 + 3*x + x^2)).at n=17A113066
• Expansion of -x/((x^2+x+1)*(x^2+3*x+1)); invert transform gives signed version of tetrahedral numbers A000292.at n=17A113067
• a(n) = floor(c*r*a(n-1)) - floor(d*s*a(n-2)), where r = (1+sqrt(5))/2, s = r/(r-1), c = 1, d = 1, a(0) = 1, a(1) = 1.at n=33A275858
• a(n) = floor(c*r*a(n-1)) - floor(d*s*a(n-2)), where r = (1+sqrt(5))/2, s = r/(r-1), c = 1, d = 1, a(0) = 1, a(1) = 1.at n=34A275858