Moebius transform of triangular numbers.

Terms

a(0) =1a(1) =2a(2) =5a(3) =7a(4) =14a(5) =13a(6) =27a(7) =26a(8) =39a(9) =38a(10) =65a(11) =50a(12) =90a(13) =75a(14) =100a(15) =100a(16) =152a(17) =111a(18) =189a(19) =148a(20) =198a(21) =185a(22) =275a(23) =196a(24) =310a(25) =258a(26) =333a(27) =294a(28) =434a(29) =292