Number of divisors of n of the form 5k+4; a(0) = 0.

Terms

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