p such that p^4 + q^4 = r^4 + s^4 = a(n).

Terms

a(0) =158a(1) =239a(2) =292a(3) =502a(4) =542a(5) =631a(6) =1203a(7) =1381a(8) =2189a(9) =2461a(10) =2797a(11) =2949a(12) =3190a(13) =3494a(14) =3537a(15) =4849a(16) =4883a(17) =5053a(18) =6140a(19) =6619a(20) =6730a(21) =6761a(22) =7557a(23) =7604a(24) =8912a(25) =8961a(26) =9018a(27) =9043a(28) =9109a(29) =9253