a(n) = n * A318653(n).

Terms

a(0) =1a(1) =2a(2) =9a(3) =4a(4) =25a(5) =18a(6) =49a(7) =8a(8) =27a(9) =50a(10) =121a(11) =36a(12) =169a(13) =98a(14) =225a(15) =48a(16) =289a(17) =54a(18) =361a(19) =100a(20) =441a(21) =242a(22) =529a(23) =72a(24) =-125a(25) =338a(26) =405a(27) =196a(28) =841a(29) =450