Shifts 3 places left under Dirichlet convolution.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =3a(7) =4a(8) =6a(9) =6a(10) =10a(11) =13a(12) =16a(13) =20a(14) =32a(15) =32a(16) =46a(17) =68a(18) =73a(19) =92a(20) =152a(21) =146a(22) =200a(23) =310a(24) =312a(25) =400a(26) =658a(27) =628a(28) =832a(29) =1328