Glaisher's chi numbers chi(p) for p a prime of the form 4m+1.

Terms

a(0) =-2a(1) =6a(2) =2a(3) =-10a(4) =-2a(5) =10a(6) =14a(7) =-10a(8) =-6a(9) =10a(10) =18a(11) =-2a(12) =6a(13) =-14a(14) =-22a(15) =14a(16) =22a(17) =-26a(18) =-18a(19) =-14a(20) =-2a(21) =30a(22) =26a(23) =-30a(24) =2a(25) =-26a(26) =-18a(27) =10a(28) =-34a(29) =26