Positive integer values of n such that 5n^2+11 is a square.

Terms

a(0) =1a(1) =7a(2) =25a(3) =127a(4) =449a(5) =2279a(6) =8057a(7) =40895a(8) =144577a(9) =733831a(10) =2594329a(11) =13168063a(12) =46553345a(13) =236291303a(14) =835365881a(15) =4240075391a(16) =14990032513a(17) =76085065735a(18) =268985219353