Numbers k such that sigma(k)*omega(k) = sigma(k+1)*omega(k+1), where omega(k) is the number of distinct prime divisors of n (A001221).

A063071

Numbers k such that sigma(k)*omega(k) = sigma(k+1)*omega(k+1), where omega(k) is the number of distinct prime divisors of n (A001221).

Terms

    a(0) =14a(1) =206a(2) =1334a(3) =1634a(4) =2685a(5) =14841a(6) =18873a(7) =19358a(8) =26872a(9) =33998a(10) =36566a(11) =42818a(12) =56564a(13) =84134a(14) =116937a(15) =122073a(16) =161001a(17) =162602a(18) =166934a(19) =174717a(20) =190773a(21) =193893a(22) =239499a(23) =245768a(24) =260096a(25) =289454a(26) =326884a(27) =383594a(28) =409695a(29) =422073

External references