Squares of the form 4*A014574(n-1) + 1.

Terms

a(0) =25a(1) =49a(2) =121a(3) =169a(4) =289a(5) =961a(6) =1681a(7) =1849a(8) =2401a(9) =5929a(10) =6889a(11) =10201a(12) =11881a(13) =14161a(14) =17689a(15) =32041a(16) =41209a(17) =69169a(18) =76729a(19) =80089a(20) =94249a(21) =96721a(22) =108241a(23) =124609a(24) =142129a(25) =165649a(26) =170569a(27) =175561a(28) =185761a(29) =190969