Excess of number of divisors of 12n+1 of form 4k+1 over those of form 4k+3.

Terms

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