Sum of the squarefree parts of the partitions of n into 4 parts.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =5a(6) =12a(7) =17a(8) =36a(9) =46a(10) =74a(11) =93a(12) =135a(13) =169a(14) =232a(15) =278a(16) =384a(17) =462a(18) =587a(19) =702a(20) =881a(21) =1009a(22) =1250a(23) =1432a(24) =1728a(25) =1976a(26) =2338a(27) =2637a(28) =3091a(29) =3481