a(n) = Sum_{d|n} Kronecker(-11, d).

Terms

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