a(n) = n^2*sigma_6(n).

Terms

a(0) =0a(1) =1a(2) =260a(3) =6570a(4) =66576a(5) =390650a(6) =1708200a(7) =5764850a(8) =17043520a(9) =43105851a(10) =101569000a(11) =214359002a(12) =437404320a(13) =815730890a(14) =1498861000a(15) =2566570500a(16) =4363141376a(17) =6975757730a(18) =11207521260a(19) =16983563402a(20) =26007914400a(21) =37875064500a(22) =55733340520a(23) =78310985810a(24) =111975926400a(25) =152597656875