Convolutory inverse of the nonprimes.

Terms

a(0) =1a(1) =-4a(2) =10a(3) =-24a(4) =59a(5) =-146a(6) =360a(7) =-886a(8) =2182a(9) =-5376a(10) =13244a(11) =-32624a(12) =80364a(13) =-197968a(14) =487672a(15) =-1201319a(16) =2959297a(17) =-7289859a(18) =17957662a(19) =-44236464a(20) =108971015a(21) =-268436517a(22) =661259918a(23) =-1628931424a(24) =4012669610a(25) =-9884711639a(26) =24349755585a(27) =-59982589144a(28) =147759635098