Number of compositions (ordered partitions) of n into an odd number of distinct primes.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =0a(7) =1a(8) =0a(9) =0a(10) =6a(11) =1a(12) =6a(13) =1a(14) =6a(15) =6a(16) =6a(17) =1a(18) =12a(19) =7a(20) =12a(21) =12a(22) =12a(23) =13a(24) =12a(25) =12a(26) =18a(27) =18a(28) =132a(29) =19