Number of integer partitions of n with unsortable prime factors.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =0a(12) =1a(13) =2a(14) =3a(15) =5a(16) =9a(17) =14a(18) =22a(19) =33a(20) =50a(21) =71a(22) =100a(23) =140a(24) =196a(25) =265a(26) =360a(27) =480a(28) =641a(29) =842