Concatenation of the decimal digits of n^2-1 and n^2.

Terms

a(0) =-10a(1) =1a(2) =34a(3) =89a(4) =1516a(5) =2425a(6) =3536a(7) =4849a(8) =6364a(9) =8081a(10) =99100a(11) =120121a(12) =143144a(13) =168169a(14) =195196a(15) =224225a(16) =255256a(17) =288289a(18) =323324a(19) =360361a(20) =399400a(21) =440441a(22) =483484a(23) =528529a(24) =575576a(25) =624625a(26) =675676a(27) =728729a(28) =783784a(29) =840841