n followed by n^2.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =3a(5) =9a(6) =4a(7) =16a(8) =5a(9) =25a(10) =6a(11) =36a(12) =7a(13) =49a(14) =8a(15) =64a(16) =9a(17) =81a(18) =10a(19) =100a(20) =11a(21) =121a(22) =12a(23) =144a(24) =13a(25) =169a(26) =14a(27) =196a(28) =15a(29) =225