129575

Appears in sequences

• Expansion of g.f. -(1+x^2+x^4)/((x^3+x^2+x-1)*(x-1)^2).at n=17A104187
• Number of different values assumed by a/b+c/d as a,b,c,d range between 1 and n.at n=32A119868
• a(n) = (2*n+1)*(2*n+3)*(2*n+5)/3.at n=35A162540
• Partial sums of A024012.at n=16A174120
• Odd numbers k that can be factored to such a pair of coprime factors x and y that A347381(k) < min(A347381(x), A347381(y)).at n=45A347390