a(n) = n-th squarefree number beginning with n.

Terms

a(0) =1a(1) =21a(2) =31a(3) =46a(4) =57a(5) =67a(6) =78a(7) =803a(8) =905a(9) =1002a(10) =1103a(11) =1213a(12) =1307a(13) =1409a(14) =1511a(15) =1618a(16) =1717a(17) =1822a(18) =1915a(19) =2021a(20) =2119a(21) =2226a(22) =2323a(23) =2433a(24) =2531a(25) =2630a(26) =2734a(27) =2834a(28) =2931a(29) =3035