-58747

Appears in sequences

• G.f.: Sum_{n>=0} x^n * (1 - x^(n+1))^n / (1 + x^(n+1))^(n+1).at n=63A323695
• a(n) = [x^(n*(n+2))] Sum_{m>=0} x^m * (1 - x^(m+1))^m / (1 + x^(m+1))^(m+1).at n=7A323696