35508domain: NAppears in sequencesa(n), n>1, is the smallest number k whose symmetric representation of sigma(k) has two parts and has a larger number of legs in its two parts than a(n-1); a(1)=3.at n=35A279105a(n) = 3*(3*n+1)*(9*n+8)/2.at n=29A304504Sum of all the parts in the partitions of n into 9 parts.at n=33A326464