Multiplicative with a(p^e) = 1 - p^3.

Terms

a(0) =1a(1) =-7a(2) =-26a(3) =-7a(4) =-124a(5) =182a(6) =-342a(7) =-7a(8) =-26a(9) =868a(10) =-1330a(11) =182a(12) =-2196a(13) =2394a(14) =3224a(15) =-7a(16) =-4912a(17) =182a(18) =-6858a(19) =868a(20) =8892a(21) =9310a(22) =-12166a(23) =182a(24) =-124a(25) =15372a(26) =-26a(27) =2394a(28) =-24388a(29) =-22568