Largest prime dividing sigma(5,n).

Terms

a(0) =11a(1) =61a(2) =151a(3) =521a(4) =61a(5) =191a(6) =41a(7) =4561a(8) =521a(9) =13421a(10) =151a(11) =2411a(12) =191a(13) =521a(14) =1801a(15) =101a(16) =4561a(17) =2251a(18) =521a(19) =191a(20) =13421a(21) =211a(22) =61a(23) =1741a(24) =2411a(25) =1181a(26) =191a(27) =401a(28) =521a(29) =21821