Numbers k such that the sum of the first k nonsquarefree numbers is nonsquarefree.

Terms

a(0) =1a(1) =2a(2) =5a(3) =9a(4) =15a(5) =16a(6) =17a(7) =24a(8) =25a(9) =26a(10) =27a(11) =29a(12) =31a(13) =32a(14) =33a(15) =35a(16) =37a(17) =40a(18) =41a(19) =43a(20) =44a(21) =45a(22) =49a(23) =50a(24) =51a(25) =58a(26) =59a(27) =61a(28) =64a(29) =66