52514domain: NAppears in sequencesReverse and Add! sequence starting with 196.at n=5A006960(1/2)*(n^2+n+2)*(n^2+3*n+1).at n=17A058310Numbers n such that n = x + y, sigma_1(n) = sigma_1(x) + sigma_1(y) and sigma_2(n) = sigma_2(x) + sigma_2(y).at n=32A219033Reverse and Add! sequence starting with 295.at n=5A277338