Squares of lucky numbers.

Terms

a(0) =1a(1) =9a(2) =49a(3) =81a(4) =169a(5) =225a(6) =441a(7) =625a(8) =961a(9) =1089a(10) =1369a(11) =1849a(12) =2401a(13) =2601a(14) =3969a(15) =4489a(16) =4761a(17) =5329a(18) =5625a(19) =6241a(20) =7569a(21) =8649a(22) =9801a(23) =11025a(24) =12321a(25) =13225a(26) =16129a(27) =16641a(28) =17689a(29) =18225