a(n) = prime(n+1)^2 + prime(n)^2.

Terms

a(0) =13a(1) =34a(2) =74a(3) =170a(4) =290a(5) =458a(6) =650a(7) =890a(8) =1370a(9) =1802a(10) =2330a(11) =3050a(12) =3530a(13) =4058a(14) =5018a(15) =6290a(16) =7202a(17) =8210a(18) =9530a(19) =10370a(20) =11570a(21) =13130a(22) =14810a(23) =17330a(24) =19610a(25) =20810a(26) =22058a(27) =23330a(28) =24650a(29) =28898