377055

Appears in sequences

• Monotonic ordering of set S generated by these rules: if x and y are in S and x^2 - y^2 > 0 then x^2 - y^2 is in S, and 1 and 3 are in S.at n=15A192647
• Numbers k such that squarefree part of sigma(k) is equal to squarefree part of 2*k.at n=29A331752