29535domain: NAppears in sequencesNumbers k such that sigma(k) = sigma(k+11).at n=15A015881a(0) = 16, a(n+1) = 3a(n) - (6-n)^2.at n=10A028493a(n) = n*(2*n^2 + 5*n + 19)/2.at n=30A163675a(n) = 3*a(n-1) - 2*(n-1), with a(0) = 1.at n=10A233656