-1130

Appears in sequences

• Expansion of (1-x)^(-1)/(1+2*x+2*x^2-x^3).at n=15A077933
• G.f. A(x) defined by: A(x)^2 consists entirely of integer coefficients between 1 and 2 (A083952); A(x) is the unique power series solution with A(0)=1.at n=20A084202
• Matrix inverse of A107722.at n=23A107728
• L.g.f.: log( Sum_{n>=0} x^(n^2) ), the log of the characteristic function of the squares.at n=28A162552
• Expansion of Product_{k>=1} ((1 - x^k)/(1 + x^k))^(sigma(k)).at n=16A320971
• G.f.: (1/(1 + x)) * Product_{k>=1} 1/(1 + x^prime(k)).at n=53A338826