50819

Appears in sequences

• Smallest solution m to (n+1)*phi(m) = n*sigma(m), or -1 if no solution exists.at n=37A065824
• a(n) = A065824(A047845(n+1)).at n=17A065884
• Number of partitions of n in which each even part has odd multiplicity.at n=46A130126
• Number of partitions p of n not containing round((min(p) + max(p))/2) as a part.at n=43A238487
• Triangle read by rows: coefficients of the polynomial (Sum_{i=0..k} (Product_{j=0..i} (x+j)))/(x*(x+2)).at n=29A270250