Number of integer partitions y of n such that Product_{i in y} prime(i)/i is an integer.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =2a(6) =5a(7) =5a(8) =5a(9) =8a(10) =9a(11) =11a(12) =17a(13) =19a(14) =21a(15) =28a(16) =32a(17) =40a(18) =51a(19) =57a(20) =67a(21) =83a(22) =96a(23) =118a(24) =142a(25) =160a(26) =189a(27) =224a(28) =260a(29) =307