Sphenic numbers differing by more than 3 from any other squarefree number.

Terms

a(0) =2526a(1) =44405a(2) =209674a(3) =220209a(4) =234622a(5) =328877a(6) =375823a(7) =409737a(8) =428947a(9) =473673a(10) =540026a(11) =569427a(12) =611174a(13) =736077a(14) =748673a(15) =758423a(16) =781747a(17) =800022a(18) =863722a(19) =889251a(20) =914878a(21) =927622a(22) =973927a(23) =982398a(24) =988478a(25) =994061a(26) =1003474a(27) =1021602a(28) =1072477a(29) =1088877