128331

Appears in sequences

• Numbers k such that the sum of the digits of k^sigma(k) is divisible by k.at n=26A109658
• a(n) = a(n-1) + a(n-2) + a(n-3) - a(n-4); a(0)=0, a(1)=1, a(2)=1, a(3)=1.at n=24A116201
• Numbers k that divide the k-th Apéry number (A005258).at n=33A372943