133888domain: NAppears in sequencesNumbers in A086473 corresponding to the unique product of two numbers having the unique sum of A086533.at n=26A086860Numbers k whose deficiency is 12: 2k - sigma(k) = 12.at n=5A141549a(n) = 2^(n-1)*(2^n+11).at n=9A256871Numbers k such that sigma(k) == 0 (mod k-6).at n=12A274558