The number of decompositions of n into different parts relatively prime to n.

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =2a(5) =1a(6) =4a(7) =2a(8) =3a(9) =2a(10) =11a(11) =2a(12) =17a(13) =3a(14) =5a(15) =5a(16) =37a(17) =3a(18) =53a(19) =5a(20) =12a(21) =7a(22) =103a(23) =5a(24) =70a(25) =10a(26) =42a(27) =11a(28) =255a(29) =4