Number of ways to write 1/n as a sum of exactly 2 unit fractions.

Terms

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