178512

Appears in sequences

• a(n) = Sum_{k divides n} (n/k)^k.at n=32A055225
• a(n) = -Sum_{d|n} (-n/d)^d.at n=32A076717
• a(n) = floor((1+2^n+3^n)/3).at n=12A087211
• a(n) = Sum_{d|n} rad(d)^(n/d), where rad(d) = A007947(d) is the squarefree kernel of d.at n=32A095001
• Expansion of Sum_{k>=1} (-1)^(k+1)*k*x^k/(1 - k*x^k).at n=32A308366
• a(n) = Sum_{d|n, d odd} (n/d)^d.at n=32A333823
• a(n) = Sum_{d|n, n/d odd} (n/d)^d.at n=32A333824
• a(n) is the number of subsets x of Z_n such that #x * #y = n and x + y = Z_n for some subset y of Z_n.at n=32A374770