Sequence is defined by the condition that Sum_{d|n} a(d)^(n/d) = 1 if n=1, = 0 if n>1.

Terms

a(0) =1a(1) =-1a(2) =-1a(3) =-2a(4) =-1a(5) =-1a(6) =-1a(7) =-6a(8) =0a(9) =-1a(10) =-1a(11) =4a(12) =-1a(13) =-1a(14) =1a(15) =-54a(16) =-1a(17) =0a(18) =-1a(19) =28a(20) =1a(21) =-1a(22) =-1a(23) =132a(24) =0a(25) =-1a(26) =0a(27) =124a(28) =-1a(29) =-1