y-values in the solution to 5*x^2 - 20 = y^2.

Terms

a(0) =0a(1) =5a(2) =15a(3) =40a(4) =105a(5) =275a(6) =720a(7) =1885a(8) =4935a(9) =12920a(10) =33825a(11) =88555a(12) =231840a(13) =606965a(14) =1589055a(15) =4160200a(16) =10891545a(17) =28514435a(18) =74651760a(19) =195440845a(20) =511670775a(21) =1339571480a(22) =3507043665a(23) =9181559515a(24) =24037634880a(25) =62931345125a(26) =164756400495a(27) =431337856360