Number of compositions (ordered partitions) of n into nonprime squarefree parts (A000469).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =3a(8) =4a(9) =5a(10) =7a(11) =9a(12) =12a(13) =16a(14) =22a(15) =30a(16) =41a(17) =55a(18) =73a(19) =96a(20) =128a(21) =173a(22) =235a(23) =317a(24) =426a(25) =570a(26) =763a(27) =1023a(28) =1375a(29) =1848