Number of compositions of n into distinct parts, any two of which have a common divisor > 1.

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =1a(8) =3a(9) =3a(10) =5a(11) =1a(12) =13a(13) =1a(14) =13a(15) =7a(16) =19a(17) =1a(18) =35a(19) =1a(20) =59a(21) =15a(22) =65a(23) =1a(24) =117a(25) =5a(26) =133a(27) =27a(28) =195a(29) =1