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

Terms

a(0) =2526a(1) =44405a(2) =47527a(3) =47973a(4) =55779a(5) =72474a(6) =101037a(7) =106327a(8) =106674a(9) =109023a(10) =110107a(11) =133577a(12) =153173a(13) =165574a(14) =183553a(15) =186247a(16) =193026a(17) =196747a(18) =208847a(19) =209674a(20) =212127a(21) =218527a(22) =220209a(23) =234622a(24) =237522a(25) =245149a(26) =261478a(27) =266853a(28) =269953a(29) =308649